Our Products
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Heat Treatment
Chemical Composition
| Element | Min | Max |
|---|---|---|
| Carbon, C | 0.35 | 0 |
| Manganese, Mn | 0.6 | 0.01 |
| Silicon, Si | 0.5 | 0 |
| Sulphur | -.– | 0.6 |
| Phosphorus | -.– | 0.6 |
Mechanical Properties
| Max Stress | 700-850 n/mm 2 | - |
|---|---|---|
| Yield Stress | 465 n/mm 2 Min | (up to 19mm LRS) |
| 0.2% Proof Stress | 450 n/mm 2 Min | (up to 19mm LRS) |
| Elongation | 16% Min | (12% if cold drawn) |
| Impact KCV | 28 Joules Min | (up to 19mm LRS |
| Hardness | 201-255 Brinell | - |
EN8 Equivalents
| BS970: 1955 | EN8 |
| BS970/PD970: | 080M40 |
| 1970 onwards | - |
| European | C40, C45, Ck40,Ck45, Cm40, Cm45 |
| Werkstoff No. | 1.0511, 1.1186, 1.1189 |
| US SAE (AISI) | 1039, 1040, 1042, 1043, 1045 |
Analysis
| Carbon | 0.35-0.45% |
|---|---|
| Manganese | 0.60-1.00% |
| Silicon | 0.05-0.35% |
| Phosphorous | 0.06% max |
| Sulphur | 0.06% max |