Materials
Grade reference
The grades we treat most, and what they usually land at. Tap any grade to enquire about it.
| Grade | Family | Usual process | Typical result | Notes |
|---|---|---|---|---|
| EN8 / 080M40 | Medium carbon | Harden & temper | 25–35 HRC | General shafts, studs, keys |
| EN9 / 070M55 | Medium carbon | Harden & temper | 30–40 HRC | Higher strength than EN8 |
| C45 | Medium carbon | Harden & temper | 45–55 HRC | Very common general engineering grade |
| EN19 / 709M40 | Cr-Mo alloy | Harden & temper | 28–40 HRC | Good through-hardening in section |
| EN24 / 817M40 | Ni-Cr-Mo alloy | Harden & temper | 32–45 HRC | Hardened and oil quenched |
| EN31 / 534A99 | Bearing steel | Harden, temper & stabilise | 58–63 HRC | Spheroidise anneal before machining |
| EN1A | Free-cutting low carbon | Case harden & temper | 1.5–2 mm case | Six-hour carburising soak |
| EN36 / 655M13 | Case hardening | Case harden & temper | 58–62 HRC case | Tough core, hard case |
| SAE 8620 | Case hardening | Case harden & temper | 58–62 HRC case | The default gear steel |
| 16MnCr5 | Case hardening | Case harden & temper | 58–62 HRC case | Automotive transmission |
| 20MnCr5 | Case hardening | Case harden & temper | 58–62 HRC case | Deeper case than 16MnCr5 |
| D2 / X153CrMoV12 | Cold work tool | Harden & temper | 58–62 HRC | Blanking and forming dies |
| D3 | Cold work tool | Harden & temper | 58–62 HRC | High wear, lower toughness |
| H13 / X40CrMoV5-1 | Hot work tool | Harden & temper | 44–52 HRC | Die casting and extrusion dies |
| 304 / 316 | Austenitic stainless | Solution anneal | Soft, ~80 HRB | Restores corrosion resistance after welding |
| F321 / F347 | Stabilised stainless | Solution anneal / stabilise | Soft, ~80 HRB | For high-temperature service |
| 410 / 420 | Martensitic stainless | Harden & temper / anneal | 40–50 HRC | Annealed and furnace cooled |
| 718 | Nickel alloy | Solution + age | To specification | Two-step ageing, ten and eight hours |
| 17-4 PH | PH stainless | Solution + age | 40–44 HRC | Condition H900 to H1150 |
No grade matches that. Send it to us anyway — we will specify it.
Contact
Send us the grade and the hardness.
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