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1.4938 Steel

Designation by Standards

Steel No. DIN EN AISI
1.4938 X11CrNiMoN12 † X12CrNiMoV12-3 -


Chemical Composition (in weight %)

C Si Mn Cr Mo Ni V W Others
0.11 0.18 0.70 11.75 1.75 2.50 0.33 - -


Description
High strength steel with good oxidation resistance.

Applications
Special purpose steel.

Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 200
Density [g/cm3]: 7.7
Thermal conductivity [W/m.K]: 29.0
Electric resistivity [Ohm mm2/m]: 0.86
Specific heat capacity[J/g.K]: 0.46.
Magnetisable: Yes

Annealing
Temperature: 660-690oC.

Hardening
Temperature: 1035-1065oC, oil.

Tempering
Ageing I: 640-690oC. Ageing II: 590-640oC.

Mechanical properties at at ambient temperature
Condition: Hardened and tempered
0.2% proof stress: 760 N/mm2
Tensile strength: 930 N/mm2
Elongation: min. 14%
Reduction: min. 40%

Forging
Hot forming temperature: 1150-900oC.

Machinability
No data.

Remark
All technical information is for reference only.

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Special Steels