DIN 1.2311 Tool Steel is a low alloyed steel with 2.0% Cr ,0.15%Mo as per DIN standard.As plastic mold tool steel, it has good toughness,wear resistance after Nitriding. It is mostly used in the hardened and tempered condition with hardness 285-320 HBW.Typical application for this steel are:For large injection and compression molds, Blow molds,die holder, backers and Structural components, shafts,etc.
1.DIN 1.2311 steel Supply Form & Size
Form of Supply | Size(mm) | Length(mm) |
Round bar | Φ6-Φ1,000 | 3,000-10,000 |
Square bar | 100×100-600×600 | 3,000-6,000 |
Plate/Sheet | Thickness :20-400 Width:80-1,000 |
2,000-6,000 |
Flat bar/Blcoks | Thickness :120-800 Width:120-1,500 |
2,000-6,000 |
2.Surface Finish&Tolerance
Surface Finish | Black-Forged | Black-Rolled | Turned | Grinding | Polished | Peeled | Cold Drawn |
Tolerance | (0,+5mm) | (0,+1mm) | (0,+3mm) | Best h9 | Best h11 | Best H11 | Best H11 |
3.Chemical Composition
Grade | C | Si | Mn | P | S | Cr | Mo |
1.2311 | 0.35-0.45 | 0.2-0.4 | 1.3-1.6 | ≤ 0.03 | ≤ 0.03 | 1.8-2.1 | 0.15-0.25 |
P20 | 0.28-0.4 | 0.2-0.8 | 0.6-1.0 | ≤ 0.03 | ≤ 0.03 | 1.4-2.0 | 0.3-0.55 |
4.Related Specifications
ASTM:P20
DIN:40CrMnMo7
AFNOR:40CMD8
GB:3Cr2Mo
5.Heat Treatment & Mechanical Property
DIN 1.2311 Mechanical Property With Quenching and Tempering condition
Size mm | Tensile,Mpa | Yield,Mpa | Charpy Impact,J | Hardness,HB |
355*500 | 1000 | 900 | 20 | 290-327 |
400*450 | 1100 | 910 | 25 | 302-330 |
500*1000 | 1100 | 935 | 24 | 292-330 |
DIN 1.2311 Hardness Vs Tempering temperature
Tempering Temperature,℃ | 200 | 300 | 400 | 500 | 600 | 700 |
Hardness,HRC | 50 | 48 | 46 | 42 | 36 | 28 |
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