We machine, weld and fabricate ferrous, stainless, nickel, titanium, aluminium and copper alloys, and verify every heat in our own laboratory before machining begins.
A105 · A350 LF2 · A694 F52–F70 · 1045 / C45 · S355 · Q355
The workhorse for frames, bases, flanges and gear racks. Excellent weldability and machinability; 1045 / C45 can be induction-hardened on wear surfaces.
4130 · 4140 · 4340 · 8620 · 18CrNiMo7-6 · A182 F11 / F22 / F91
High strength and toughness after quench-and-temper or carburizing. The standard choice for shafts, gears, pinions and heavily loaded pins.
304 / 316L · 321 · 410 · 17-4PH · 904L · 254SMO · 2205 · 2507 · Zeron 100
Corrosion-resistant grades for pump, valve, food, chemical and seawater service. Duplex and super duplex combine high strength with chloride resistance.
Inconel 600 / 625 / 718 · Incoloy 800H / 825 · Hastelloy C-276 / C-22 · Monel 400 / K-500 · Nimonic 80A · Waspaloy
For high temperature, high pressure and aggressive media. These alloys work-harden rapidly, so we use rigid setups, sharp carbide or ceramic tooling and controlled cutting parameters.
D2 1.2379 · D3 · A2 · O1 · H11 1.2343 · H13 1.2344 · P20 1.2311 · 1.2738
Hard, wear-resistant steels for dies, punches, moulds and wear parts. Rough-machined in the annealed state, then hardened and finished by grinding or EDM.
Gr. 1 / 2 / 5 / 7 / 12 / 16 · ASTM B381 F1–F16 · Ti-6Al-4V
Outstanding strength-to-weight ratio and corrosion resistance. Machined with high-pressure coolant and low-heat strategies to protect tool life and surface integrity.
1060 · 2024 · 2A12 · 3003 · 5083 · 5A06 · 6061 · 6082 · 7050 · 7075 · 7475
Light, dimensionally stable and fast to machine. Used for housings, end covers, fixtures and frames where weight matters, with anodized or chromate finishes.
C44300 admiralty · C46400 naval brass · C63000 NAB · C70600 90/10 · C71500 70/30 Cu-Ni · C17200
For bushings, bearings, electrical parts and wear components. Bronzes resist galling against steel; copper offers high electrical and thermal conductivity.
A216 WCB · A352 LCC · A351 CF8M · A890 4A/5A · A494 CW6MC · QT500
Castings for housings, beds and heavy wheels, machined from rough casting to finished part. Ductile iron combines good vibration damping with near-steel strength.
Nylon (PA6, PA66), POM, PEEK, UHMW-PE and PTFE for racks, wear strips and insulators.
Open-die and ring-rolled forgings for shafts, rings and flanges, ultrasonically tested to EN 10228 or ASTM A388.
Domestic and imported mill stock with EN 10204 3.1 certificates and full heat-number traceability.
We also machine customer-supplied forgings, castings and bar, with incoming inspection recorded.
Grade library
Forging, alloy, stainless, duplex, nickel, tool, titanium, copper, aluminium and cast grades, with ASTM, UNS, EN/DIN W.Nr, JIS and GB designations and AMS aerospace specifications. Equivalents are approximate; the governing standard is the one on your drawing.
Pressure-vessel and flange forging grades to ASTM/ASME, with the closest European equivalents.
| ASTM / ASME spec | Grades | Typical EN equivalent | W.Nr | Main use |
|---|---|---|---|---|
| A105 / SA-105 | A105 | P250GH / C22.8 | 1.0460 / 1.0402 | Flanges, fittings, valve bodies |
| A182 / SA-182 | F1 | 16Mo3 | 1.5415 | High-temperature flanges |
| A182 / SA-182 | F11 Cl.1/2/3, F12 | 13CrMo4-5 | 1.7335 | Boiler and refinery forgings |
| A182 / SA-182 | F22 Cl.1/3 | 10CrMo9-10 / 11CrMo9-10 | 1.7380 / 1.7383 | Hydrocracker and power forgings |
| A182 / SA-182 | F5, F5a | X12CrMo5 | 1.7362 | Refinery service |
| A182 / SA-182 | F9 | X12CrMo9-1 | 1.7386 | High-temperature service |
| A182 / SA-182 | F91 | X10CrMoVNb9-1 | 1.4903 | Power plant headers, valves |
| A182 / SA-182 | F92 | X10CrWMoVNb9-2 | 1.4901 | Ultra-supercritical power |
| A182 / SA-182 | F2, F7, F10, F21, F36 | by specification | — | Pressure and heat service |
| A350 / SA-350 | LF1, LF2 Cl.1/2, LF3, LF5, LF6, LF9 | P285QH / 12Ni14 (LF3) | 1.0478 / 1.5637 | Low-temperature flanges |
| A694 | F42, F46, F48, F50, F52, F56, F60, F65, F70 | by yield class | — | High-yield pipeline flanges |
| A336 / SA-336 | F1, F11, F12, F22, F22V, F3V, F5, F5A, F6, F9, F91 | by grade | — | Large pressure-vessel forgings |
| A266 / SA-266 | Class 1, 2, 3, 4 | P280GH / P305GH | 1.0426 / 1.0436 | Pressure-vessel components |
| A508 / SA-508 | Grade 1, 2, 3, 4N | by grade | — | Nuclear and heavy vessels |
| A707 | L1–L8 Class 1–4 | by grade | — | Low-temperature flanges |
| A473 | 304, 316, 410, 420 forgings | see stainless | — | Stainless forgings |
Through-hardening, case-hardening and nitriding steels for shafts, gears and high-load parts.
| AISI / SAE | EN designation | W.Nr | JIS | China GB |
|---|---|---|---|---|
| Carbon steels | ||||
| 1020 | C22E | 1.1151 | S20C | 20 |
| 1035 | C35E | 1.1181 | S35C | 35 |
| 1045 | C45E | 1.1191 | S45C | 45 |
| 1050 | C50E | 1.1206 | S50C | 50 |
| A36 / A572 Gr.50 | S235JR / S355J2 | 1.0038 / 1.0577 | SS400 / SM490 | Q235 / Q355 |
| Quench & temper alloy steels | ||||
| 4130 | 25CrMo4 | 1.7218 | SCM430 | 30CrMo |
| 4135 / 4137 | 34CrMo4 | 1.7220 | SCM435 | 35CrMo |
| 4140 / 4142 | 42CrMo4 | 1.7225 | SCM440 | 42CrMo |
| 4145H mod. | Oilfield drill-collar grade | — | — | — |
| 4340 | 34CrNiMo6 | 1.6582 | SNCM447 | 40CrNiMoA |
| 4330V mod. | Oilfield high-toughness grade | — | — | — |
| — | 30CrNiMo8 | 1.6580 | — | 30Cr2Ni2Mo |
| — | 36CrNiMo4 | 1.6511 | — | — |
| — | 40NiCrMo6 | 1.6565 | — | — |
| — | 34CrNiMo8 | 1.6655 | — | — |
| 5140 | 41Cr4 | 1.7035 | SCr440 | 40Cr |
| 6150 | 51CrV4 | 1.8159 | SUP10 | 50CrVA |
| Case-hardening steels | ||||
| 8620 | 20NiCrMo2-2 | 1.6523 | SNCM220 | 20CrNiMo |
| 4317 | 17NiCrMo6-4 | 1.6566 | — | — |
| 4320 | 18CrNiMo7-6 | 1.6587 | — | 17Cr2Ni2Mo |
| 9310 | — | — | SNCM815 | — |
| — | 16NiCrMo12 | 1.6657 | — | — |
| 5115 | 16MnCr5 | 1.7131 | SCr415 | 15CrMn |
| — | 20MnCr5 | 1.7147 | SMnC420 | 20CrMnTi (similar) |
| — | 18CrMo4 | 1.7243 | SCM418 | 20CrMo |
| Nitriding steels | ||||
| — | 41CrAlMo7-10 | 1.8509 | SACM645 | 38CrMoAl |
| — | 31CrMoV9 | 1.8519 | — | — |
Austenitic, ferritic, martensitic, precipitation-hardening and super-austenitic grades, with forged-grade designations.
| Grade | UNS | ASTM A182 forged | EN W.Nr | Type |
|---|---|---|---|---|
| Austenitic | ||||
| 304 | S30400 | F304 | 1.4301 | Austenitic |
| 304L | S30403 | F304L | 1.4306 / 1.4307 | Austenitic |
| 304H | S30409 | F304H | 1.4948 | Austenitic |
| 304N | S30451 | F304N | — | Austenitic |
| 304LN | S30453 | F304LN | 1.4311 | Austenitic |
| 309S | S30908 | — | 1.4833 | Heat resistant |
| 309H | S30909 | F309H | — | Heat resistant |
| 310 | S31000 | F310 | 1.4841 | Heat resistant |
| 310S | S31008 | — | 1.4845 | Heat resistant |
| 316 | S31600 | F316 | 1.4401 | Austenitic |
| 316L | S31603 | F316L | 1.4404 | Austenitic |
| 316H | S31609 | F316H | 1.4919 | Austenitic |
| 316Ti | S31635 | — | 1.4571 | Stabilized |
| 316N | S31651 | F316N | — | Austenitic |
| 316LN | S31653 | F316LN | 1.4429 | Austenitic |
| 316LVM | S31673 | ASTM F138 | 1.4441 | Medical |
| 317 | S31700 | F317 | 1.4449 | Austenitic |
| 317L | S31703 | F317L | 1.4438 | Austenitic |
| 321 | S32100 | F321 | 1.4541 | Stabilized |
| 321H | S32109 | F321H | 1.4878 | Stabilized |
| 347 | S34700 | F347 | 1.4550 | Stabilized |
| 347H | S34709 | F347H | 1.4961 | Stabilized |
| 348 | S34800 | F348 | — | Stabilized |
| Ferritic & martensitic | ||||
| 410 | S41000 | F6a | 1.4006 | Martensitic |
| 416 | S41600 | — | 1.4005 | Free-machining |
| 420 | S42000 | — | 1.4021 / 1.4028 | Martensitic |
| 430 | S43000 | F430 | 1.4016 | Ferritic |
| 431 | S43100 | — | 1.4057 | Martensitic |
| 440C | S44004 | — | 1.4125 | Martensitic |
| F6NM (13-4) | S41500 | F6NM | 1.4313 | Martensitic |
| Precipitation hardening | ||||
| 17-4PH (630) | S17400 | — | 1.4542 | PH |
| 15-5PH | S15500 | XM-12 | 1.4545 | PH |
| 17-7PH (631) | S17700 | — | 1.4568 | PH |
| PH13-8Mo | S13800 | XM-13 | 1.4534 | PH |
| A-286 (660) | S66286 | — | 1.4980 | PH austenitic |
| Super-austenitic & nitrogen-strengthened | ||||
| 904L | N08904 | F904L | 1.4539 | Super-austenitic |
| 254 SMO | S31254 | F44 | 1.4547 | Super-austenitic |
| 654 SMO | S32654 | — | 1.4652 | Super-austenitic |
| AL-6XN | N08367 | F62 | 1.4529 | Super-austenitic |
| Alloy 20 | N08020 | F20 | 2.4660 | Super-austenitic |
| 253 MA | S30815 | F45 | 1.4835 | Heat resistant |
| Sanicro 28 | N08028 | — | 1.4563 | Super-austenitic |
| Nitronic 50 | S20910 | XM-19 | 1.3964 | High-N austenitic |
| Nitronic 60 | S21800 | — | — | Galling resistant |
| Nitronic 40 | S21900 | XM-10 | — | High-N austenitic |
| Nitronic 30 | S20400 | — | — | High-N austenitic |
| Nitronic 32 | S24100 | XM-28 | — | High-N austenitic |
| Nitronic 33 | S24000 | XM-29 | — | High-N austenitic |
| XM-11 | S21904 | — | — | High-N austenitic |
Ferritic-austenitic grades for seawater, oil and gas, and chemical process duty. PREN = %Cr + 3.3 %Mo + 16 %N.
| Grade | UNS | ASTM A182 | EN W.Nr | Typical PREN |
|---|---|---|---|---|
| 2304 (lean) | S32304 | — | 1.4362 | ≈ 26 |
| LDX 2101 (lean) | S32101 | — | 1.4162 | ≈ 26 |
| 329 | S32900 | — | 1.4460 | ≈ 33 |
| 2205 | S31803 | F51 | 1.4462 | ≈ 35 |
| 2205 (high N) | S32205 | F60 | 1.4462 | ≈ 36 |
| 44LN | S31200 | F50 | — | ≈ 33 |
| 7-Mo Plus | S32950 | F52 | — | ≈ 35 |
| 255 / Ferralium | S32550 | F61 | 1.4507 | ≈ 38 |
| 2507 super duplex | S32750 | F53 | 1.4410 | ≥ 41 |
| Zeron 100 | S32760 | F55 | 1.4501 | ≥ 41 |
| DP3W | S39274 | F54 | — | ≥ 41 |
| UR 52N+ | S32520 | F59 | 1.4507 | ≥ 41 |
| SAF 2707 HD | S32707 | — | — | ≈ 49 |
| 25-7 Mo | S39277 | F57 | — | ≥ 41 |
Corrosion-resistant and high-temperature alloys for chemical, oil and gas, power and aerospace components.
| Alloy | UNS | EN W.Nr | Family |
|---|---|---|---|
| Pure nickel & nickel-copper | |||
| Nickel 200 | N02200 | 2.4066 | Pure nickel |
| Nickel 201 | N02201 | 2.4068 | Pure nickel |
| Monel 400 | N04400 | 2.4360 | Ni-Cu |
| Monel R-405 | N04405 | — | Ni-Cu free-machining |
| Monel K-500 | N05500 | 2.4375 | Ni-Cu age-hardenable |
| Inconel (Ni-Cr) | |||
| Inconel 600 | N06600 | 2.4816 | Ni-Cr-Fe |
| Inconel 601 | N06601 | 2.4851 | Ni-Cr-Fe |
| Inconel 617 | N06617 | 2.4663 | Ni-Cr-Co-Mo |
| Inconel 625 | N06625 | 2.4856 | Ni-Cr-Mo-Nb |
| Inconel 625LCF | N06626 | — | Ni-Cr-Mo-Nb |
| Inconel 686 | N06686 | 2.4606 | Ni-Cr-Mo-W |
| Inconel 690 | N06690 | 2.4642 | Ni-Cr-Fe |
| Inconel 693 | N06693 | — | Ni-Cr-Al |
| Inconel 718 | N07718 | 2.4668 | Age-hardenable |
| Inconel 725 | N07725 | — | Age-hardenable |
| Inconel X-750 | N07750 | 2.4669 | Age-hardenable |
| Inconel 751 | N07751 | — | Age-hardenable |
| Incoloy (Fe-Ni-Cr) | |||
| Incoloy 800 | N08800 | 1.4876 | Fe-Ni-Cr |
| Incoloy 800H | N08810 | 1.4958 | Fe-Ni-Cr |
| Incoloy 800HT | N08811 | 1.4959 | Fe-Ni-Cr |
| Incoloy 825 | N08825 | 2.4858 | Fe-Ni-Cr-Mo |
| Incoloy 925 | N09925 | — | Age-hardenable |
| Incoloy 945 | N09945 | — | Age-hardenable |
| Incoloy 901 | N09901 | 2.4662 | Age-hardenable |
| Alloy 31 | N08031 | 1.4562 | Fe-Ni-Cr-Mo |
| Hastelloy (Ni-Mo / Ni-Cr-Mo) | |||
| Hastelloy B | N10001 | — | Ni-Mo |
| Hastelloy B-2 | N10665 | 2.4617 | Ni-Mo |
| Hastelloy B-3 | N10675 | 2.4600 | Ni-Mo |
| Hastelloy C-4 | N06455 | 2.4610 | Ni-Cr-Mo |
| Hastelloy C-22 | N06022 | 2.4602 | Ni-Cr-Mo-W |
| Hastelloy C-276 | N10276 | 2.4819 | Ni-Cr-Mo-W |
| Hastelloy C-2000 | N06200 | 2.4675 | Ni-Cr-Mo-Cu |
| Alloy 59 | N06059 | 2.4605 | Ni-Cr-Mo |
| Hastelloy G | N06007 | 2.4618 | Ni-Cr-Fe-Mo |
| Hastelloy G-3 | N06985 | 2.4619 | Ni-Cr-Fe-Mo |
| Hastelloy G-30 | N06030 | 2.4603 | Ni-Cr-Fe-Mo |
| Hastelloy G-35 | N06035 | 2.4643 | Ni-Cr-Mo |
| Hastelloy X | N06002 | 2.4665 | Ni-Cr-Fe-Mo |
| Nimonic, aerospace & cobalt alloys | |||
| Nimonic 75 | N06075 | 2.4951 / 2.4630 | Ni-Cr |
| Nimonic 80A | N07080 | 2.4952 / 2.4631 | Age-hardenable |
| Nimonic 90 | N07090 | 2.4632 | Age-hardenable |
| Nimonic 105 | — | 2.4634 | Age-hardenable |
| Nimonic 115 | — | 2.4636 | Age-hardenable |
| Nimonic 263 | N07263 | 2.4650 | Age-hardenable |
| Waspaloy | N07001 | 2.4654 | Age-hardenable |
| Udimet 500 | N07500 | — | Age-hardenable |
| René 41 | N07041 | 2.4973 | Age-hardenable |
| Haynes 25 / L-605 | R30605 | 2.4964 | Cobalt |
| Haynes 188 | R30188 | 2.4683 | Cobalt |
| Haynes 230 | N06230 | 2.4733 | Ni-Cr-W-Mo |
| Stellite 6B | R30016 | — | Cobalt wear alloy |
| Controlled-expansion & soft magnetic | |||
| Invar 36 | K93600 | 1.3912 | Low expansion |
| Kovar | K94610 | 1.3981 | Glass-sealing |
| Permendur 49 / Vacoflux 50 | — | — | Soft magnetic Fe-Co |
For dies, punches, shear blades, forming tools and wear parts.
| AISI | DIN / EN | W.Nr | JIS | Hardness (typ.) |
|---|---|---|---|---|
| D2 | X153CrMoV12 | 1.2379 | SKD11 | 58–62 HRC |
| D3 | X210Cr12 | 1.2080 | SKD1 | 58–64 HRC |
| D6 | X210CrW12 | 1.2436 | SKD2 | 58–64 HRC |
| — | X165CrMoV12 | 1.2601 | — | 58–62 HRC |
| A2 | X100CrMoV5 | 1.2363 | SKD12 | 57–62 HRC |
| O1 | 100MnCrW4 | 1.2510 | SKS3 | 58–62 HRC |
| O2 | 90MnCrV8 | 1.2842 | — | 58–62 HRC |
| S1 | 60WCrV8 | 1.2550 | SKS41 | 54–58 HRC |
| S7 | 50CrMoV13-15 | 1.2355 | — | 54–58 HRC |
| 6F7 | X45NiCrMo4 | 1.2767 | — | 50–56 HRC |
| — | X50CrMoW9-1-1 | 1.2631 | — | 56–60 HRC |
| — | 81MoCrV42-16 | 1.2369 | — | 58–62 HRC |
| L2 | — | — | — | by spec |
| M2 | HS6-5-2C | 1.3343 | SKH51 | 62–65 HRC |
For forging dies, die-casting moulds, extrusion tools and hot shear blades.
| AISI | DIN / EN | W.Nr | JIS | Use |
|---|---|---|---|---|
| H11 | X38CrMoV5-1 | 1.2343 | SKD6 | Forging dies, mandrels |
| H13 | X40CrMoV5-1 | 1.2344 | SKD61 | Die-casting, extrusion |
| — | X38CrMoV5-3 | 1.2367 | — | Premium die-casting |
| H10 | X32CrMoV3-3 | 1.2365 | SKD7 | Hot forging |
| H12 | X37CrMoW5-1 | 1.2606 | SKD62 | Hot punches |
| H21 | X30WCrV9-3 | 1.2581 | SKD5 | Extrusion tools |
| — | X45CoCrWV5-5-5 | 1.2678 | — | High hot strength |
| — | X45CoCrMoV5-5-3 | 1.2889 | — | High hot strength |
| — | X32CrMoCoV3-3-3 | 1.2885 | — | Forging inserts |
| L6 | 56NiCrMoV7 | 1.2714 | SKT4 | Forging die blocks |
| 6F2 | 55NiCrMoV6 | 1.2713 | SKT3 | Forging die blocks |
| 314 | X16CrNiSi25-20 | 1.2782 / 1.4841 | — | Heat-resistant tooling |
Pre-hardened and corrosion-resistant steels for injection moulds.
| AISI | DIN / EN | W.Nr | JIS / trade | Condition |
|---|---|---|---|---|
| P20 | 40CrMnMo7 | 1.2311 | — | Pre-hardened 28–34 HRC |
| P20+S | 40CrMnMoS8-6 | 1.2312 | — | Pre-hardened, free-machining |
| P20+Ni (718) | 40CrMnNiMo8-6-4 | 1.2738 | 718 | Pre-hardened 30–36 HRC |
| 420 | X42Cr13 | 1.2083 | SUS420J2 | Corrosion resistant |
| — | X38CrMo16 | 1.2316 | — | Corrosion resistant |
| — | — | — | NAK80 | Pre-hardened 37–43 HRC |
Forgings to ASTM B381, bar to ASTM B348, plate to ASTM B265, pipe to ASTM B861/B862.
| ASTM grade | UNS | Composition | B381 forging | Typical use |
|---|---|---|---|---|
| Grade 1 | R50250 | CP titanium, lowest strength | F1 | Chemical linings, plate heat exchangers |
| Grade 2 | R50400 | CP titanium | F2 | Seawater, chemical process equipment |
| Grade 5 | R56400 | Ti-6Al-4V | F5 | High-strength shafts, flanges, aerospace parts |
| Grade 7 | R52400 | Ti-0.15Pd | F7 | Reducing acids, chloride service |
| Grade 12 | R53400 | Ti-0.3Mo-0.8Ni | F12 | Hot brine, chemical process |
| Grade 16 | R52402 | Ti-0.05Pd | F16 | Lower-cost alternative to Grade 7 |
| Grade 23 | R56407 | Ti-6Al-4V ELI | F23 | Medical and cryogenic parts |
Brasses, bronzes and copper-nickels for marine, heat-exchanger and wear applications.
| UNS | Common name | Family | Typical use |
|---|---|---|---|
| C11000 | ETP copper | Copper | Bus bars, electrical parts |
| C17200 | Beryllium copper | High-strength copper | Springs, non-sparking tools |
| C36000 | Free-cutting brass | Brass | Turned fittings |
| C36500 | Leaded Muntz metal | Brass | Tube sheets, condenser plates |
| C44300 | Admiralty brass, arsenical | Brass | Condenser and heat-exchanger parts |
| C44400 | Admiralty brass, antimonial | Brass | Condenser and heat-exchanger parts |
| C44500 | Admiralty brass, phosphorized | Brass | Condenser and heat-exchanger parts |
| C46400 | Naval brass, uninhibited | Brass | Marine hardware, shafts, tube sheets |
| C46500 | Naval brass, arsenical | Brass | Marine hardware, tube sheets |
| C61300 | Aluminium bronze | Aluminium bronze | Pump and valve parts, fasteners |
| C61400 | Aluminium bronze D | Aluminium bronze | Marine and chemical components |
| C63000 | Nickel aluminium bronze | Aluminium bronze | Bushings, valve seats, propeller parts |
| C63200 | Nickel aluminium bronze (naval) | Aluminium bronze | Naval pump and valve parts |
| C70600 | 90/10 copper-nickel | Copper-nickel | Seawater piping, flanges |
| C70620 | 90/10 copper-nickel, welding grade | Copper-nickel | Welded seawater systems |
| C71500 | 70/30 copper-nickel | Copper-nickel | Condensers, high-velocity seawater |
| C71520 | 70/30 copper-nickel, welding grade | Copper-nickel | Welded seawater systems |
| C72200 | Copper-nickel-chromium | Copper-nickel | Condenser tubes, erosion resistance |
| C93200 | Bearing bronze SAE 660 | Tin bronze | Bushings, bearings |
| C95400 | Cast aluminium bronze | Aluminium bronze | Worm gears, wear rings |
Wrought alloys by series; Chinese designations (2A11, 3A21, 5A0x, 6A02) shown with international grades.
| Series | Grades | Characteristics | Typical use |
|---|---|---|---|
| 1xxx (pure Al) | 1070A, 1060, 1100, 1200 | Excellent corrosion resistance and conductivity, low strength | Electrical parts, chemical equipment |
| 2xxx (Al-Cu) | 2A11, 2017, 2A12, 2024, 2014, 2219 | High strength, heat-treatable, good machinability | Aerospace fittings, high-strength parts |
| 3xxx (Al-Mn) | 3003, 3A21 | Moderate strength, good formability and corrosion resistance | Tanks, covers, heat exchangers |
| 5xxx (Al-Mg) | 5A02, 5052, 5A03, 5A05, 5A06, 5083, 5086, 5454 | Good weldability and marine corrosion resistance | Marine parts, pressure vessels, frames |
| 6xxx (Al-Mg-Si) | 6061, 6063, 6A02, 6082, 6005 | Medium strength, heat-treatable, anodizes well | Housings, fixtures, structural parts |
| 7xxx (Al-Zn) | 7049, 7050, 7075, 7079, 7175, 7475 | Highest strength, heat-treatable | Aerospace and high-load parts |
| Casting alloys | A356, A357, ZL101, ZL104 | Good castability, heat-treatable | Motor housings, end covers |
Castings machined from rough to finished part; grades by ASTM specification.
| ASTM spec | Title | Grades |
|---|---|---|
| A216 | Carbon steel for high-temperature service | WCA, WCB, WCC |
| A217 | Alloy and martensitic steel, pressure parts | WC1, WC4, WC5, WC6, WC9, WC11, C5, C12, C12A, CA15 |
| A352 | Ferritic and martensitic steel, low-temperature | LCA, LCB, LCC, LC1, LC2, LC2-1, LC3, LC4, LC9, CA6NM |
| A487 | Steel castings for pressure service | Grades 1–16, CA6NM |
| A732 | Investment castings, carbon and low alloy | 1A, 2A, 2Q, 3A, 3Q, 4A, 4Q, 5N, 6N, 7Q, 8Q, 9Q, 10Q, 11Q, 12Q, 13Q, 14Q, 15A |
| A351 | Austenitic steel, pressure-containing parts | CF3, CF3A, CF8, CF8A, CF3M, CF3MA, CF8M, CF3MN, CF8C, CF10, CF10M, CH8, CH10, CH20, CK20, HK30, HK40, HT30, CF10MC, CN7M, CN3MN, CE8MN, CG6MMN, CG8M, CF10SMnN, CT15C, CK3MCuN, CE20N, CG3M, CD3MWCuN |
| A743 | Corrosion-resistant castings, general use | CF8, CG12, CF20, CF8M, CF8C, CF16F, CF16Fa, CH10, CH20, CA15, CA6NM |
| A744 | Corrosion-resistant castings, severe service | CF8, CF8M, CF8C, CF3, CF3M, CG3M, CG8M, CN7M, CN7MS, CN3MN, CK3MCuN |
| A890 | Duplex stainless castings | CD4MCu, CD4MCuN, CD3MCuN, CE8MN, CD6MN, CD3MN, CE3MN, CD3MWCuN |
| A995 | Duplex castings, pressure parts | CD4MCuN, CD3MCuN, CE8MN, CD6MN, CD3MN, CE3MN, CD3MWCuN |
| A297 | Heat-resistant steel castings | HF, HH, HI, HK, HE, HT, HU, HW, HX, HC, HD, HL, HN, HP |
| A608 | Heat-resistant centrifugal tubes | HC30, HD50, HE35, HF30, HH30, HH33, HI35, HK30, HK40, HL30, HL40, HN40, HT50, HU50, HW50, HX50 |
| A494 | Nickel and nickel alloy castings | CZ100, M35-1, M35-2, M30H, M25S, M30C, N12MV, N7M, N3M, CY40, CW12MW, CW6M, CW2M, CW6MC, CY5SnBiM, CX2MW, CU5MCuC, CX2M |
| A536 / A395 | Ductile iron | 60-40-18, 65-45-12, 80-55-06, 100-70-03 |
| A48 | Grey iron | Class 20–60 |
SAE AMS material specifications we can source and machine to, with certificates.
| AMS | Alloy | Product form / condition |
|---|---|---|
| Alloy steels | ||
| AMS 6348 | AISI 4130 | Bars, normalized |
| AMS 6370 | AISI 4130 | Bars, forgings and rings |
| AMS 6409 | AISI 4340 | Bars, forgings, tubing; aircraft quality, normalized and tempered |
| AMS 6414 | AISI 4340 | Bars, forgings, tubing; vacuum consumable-electrode remelted |
| AMS 6415 | AISI 4340 | Bars, forgings and tubing |
| AMS 6484 | AISI 4340 | Bars, forgings, tubing; normalized and tempered |
| Stainless steels | ||
| AMS 5639 | 304 | Bars, wire, forgings |
| AMS 5647 | 304L | Bars, wire, forgings, tubing; solution treated |
| AMS 5648 | 316 | Bars, wire, forgings |
| AMS 5653 | 316L | Bars, forgings and rings |
| AMS 5645 | 321 | Bars, wire, forgings, tubing; solution treated |
| AMS 5646 | 347 | Bars, wire, forgings, tubing; solution treated |
| AMS 5610 | 416 | Bars, wire, forgings |
| AMS 5611 | 403 | Bars, wire, forgings |
| AMS 5612 | 410 | Bars, wire, forgings, tubing, rings |
| AMS 5613 | 410 | Bars, wire, forgings |
| AMS 5616 | 418 (Greek Ascoloy) | Bars, wire, forgings |
| AMS 5627 | 430 (SAE 51430) | Bars, wire, forgings, tubing; annealed |
| AMS 5630 | 440C | Bars, wire, forgings |
| AMS 5655 | 422 | Bars, wire, forgings; hardened and tempered |
| AMS 5643 | 17-4PH | Bars and forgings; precipitation hardening |
| AMS 5622 | 17-4PH | Bars, forgings, tubing; consumable-electrode remelted |
| AMS 5659 | 15-5PH | Bars, forgings, rings; consumable-electrode remelted |
| AMS 5731 | A-286 | Bars, forgings, tubing, rings; solution treated |
| Nickel and cobalt alloys | ||
| AMS 5665 | Inconel 600 | Bars, forgings and rings |
| AMS 5666 | Inconel 625 | Bars, forgings, extrusions, rings; annealed |
| AMS 5662 | Inconel 718 | Bars, forgings, rings; solution treated |
| AMS 5661 | Incoloy 901 | Bars, forgings, rings |
| AMS 5754 | Hastelloy X | Bars, forgings, rings |
| AMS 5750 | Ni-15.5Cr-16Mo-3.8W (Hastelloy C type) | Bars, forgings, rings; solution treated |
| AMS 5711 | Ni-15.8Cr-15.2Mo-0.3Al-0.05La | Bars, forgings, rings; solution treated |
| AMS 5772 | Haynes 188 | Bars, forgings, rings |
Material selection guide
If your drawing leaves the grade open, tell us how the part is used. These are the materials we most often recommend for common service conditions; final selection always follows your design standard.
| Service condition | Typically recommended | Why |
|---|---|---|
| High-load shafts and gears | 42CrMo4, 34CrNiMo6, 18CrNiMo7-6 | High strength and toughness after Q&T or carburizing |
| Welded frames and bases | S355, Q355, A572 Gr.50 | Good weldability, low cost, stable after stress relief |
| Seawater and brine | Duplex 2205, super duplex 2507, titanium Gr.2 | Resistance to pitting and chloride stress corrosion |
| Chemical and food process | 316L, 904L, Hastelloy C-276 | Corrosion resistance and cleanability |
| High temperature | Inconel 625 / 718, 310S | Strength and oxidation resistance at temperature |
| Abrasive wear | Hardened 42CrMo4, D2, high-chrome iron | Surface hardness with a tough core |
| Lightweight housings | 6061-T6, 7075-T6, A356 | Low mass, fast machining, anodizing options |
| Bearings and bushings | C93200, C95400, C17200 | Low friction and resistance to galling |
| Vibration-damping housings | Ductile iron QT450–QT700, HT250 | Good damping and castability |
Material verification
A wrong heat discovered after machining wastes weeks. Every lot is checked against its certificate before it reaches a machine, and traceability is kept to the finished part.
Mill certificate checked against the drawing grade, standard and heat-treatment condition.
Composition confirmed by direct-reading OES, with ICP-AES or C/S and O/N/H analysis where specified.
Tensile, impact and hardness tests on test bars or coupons when required.
UT on forgings and thick plate, MT on critical surfaces of castings.
Heat number transferred to each part and recorded on the final inspection report.
Materials FAQ
Need a grade that is not listed? Ask us; we source most international grades.
Ask about a materialYes. We purchase plate, bar, forgings and castings to GB, ASTM/AISI, EN/DIN and JIS standards from domestic and imported mills, and cross-reference equivalent grades during drawing review when your specification allows it.
Yes. Mill certificates are supplied with every order, and EN 10204 3.1 certificates are provided on request, with heat numbers traceable to each finished part.
Duplex 2205 and super duplex 2507 are the most common choices for seawater pump casings and impellers because of their resistance to pitting and chloride stress corrosion. Titanium Grade 2 is used where the highest corrosion resistance is required.
Yes. We machine your own forgings, castings and bar. Incoming material is inspected and recorded, and chemical verification can be added before machining starts.
Titanium Grade 1, 2, 5 (Ti-6Al-4V), 7, 12, 16 and 23, as forgings to ASTM B381 (F1, F2, F5, F7, F12, F16), bar to ASTM B348, plate to ASTM B265 and pipe to ASTM B861/B862.
Yes. We source and machine to AMS specifications including AMS 6348, 6370, 6409, 6414, 6415 and 6484 (4130 and 4340 steels), AMS 5639, 5647, 5648, 5653, 5643, 5659 and 5731 (stainless and A-286), and AMS 5665, 5666, 5662, 5754 and 5772 (nickel and cobalt alloys), with full material certification.
90/10 copper-nickel C70600 and C70620, 70/30 copper-nickel C71500 and C71520, C72200, nickel aluminium bronze C63000 and C63200, aluminium bronze C61300 and C61400, admiralty brass C44300, C44400 and C44500, naval brass C46400 and C46500, and Muntz metal C36500.
Yes. We machine nylon (PA6 and PA66), POM, PEEK, UHMW-PE and PTFE for racks, wear strips, bushings and insulators.
Request a quote
Email sales@symachiningparts.com or message us on WhatsApp at +86 189 1530 7612. All drawings are treated as confidential.