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BS 970 1991 | BS 970 1955 EN | AISI/SAE | Werkstoff |
708M40 | EN19 | 4140 | 1.7225 |
Thickness | from 3mm up to as thick as 150mm |
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Size | from 2000 x 1000mm up to 4000 x 2000mm |
Length | 3000mm-18000mm |
Supply Condition | As Rolled, Normalized Rolling, Furnace Normalizing, Vacuum Degassing, Simulated Post-Weld Heat Treatment or as per customer requirement. |
Impact tested | -52° C |
Process of Manufacturing | Hot-Rolled (HR) |
Grade | Mn | Si | C | Cr | P | Ni | S | Mo |
EN - 19 | .50 - .80 | .10 - .35 | .35 - .45 | .90 - 1.40 | .040 | - | .040 | .20 - .40 |
Max Stress | 850-1000 n/mm2 | |
Impact KCV | 55 Joules Min | |
Hardness | 248-302 HB | |
Yield Stress | 700 N/mm2 Min | |
0.2% Proof Stress | 680 N/mm2 Min | subject to ruling section |
Elongation | 9% Min |