DIN 17212 Grade 41CrMo4 quenched and tempered (+QT)

DIN 17212 Grade 41CrMo4 quenched and tempered (+QT) introduction

The in the quenched and tempered condition flame and induction hardenable alloyed special steel has a, compared to the common quenched and tempered steel, constricted range of the C content and a lower maximum value of the P content.
The steel is suitable for flash welding, if prooved conditions will be kept.
For better machining the steel can be soft annealed. In this soft annealed and also in the normalised condition the material is unrestrained cold shearable.
A maximum value for nonmetallic inclusions by arrangement.
Delivery forms:
- semi-finished product, rolled or forged
- steel bars, hot-rolled or hot forged
- wire, hot-rolled
- sheet, strip and wide flats, hot-rolled
- tubes, coils, seamless
- open die and drop forgings
Application:
car industry, engine construction, mechanical engineering

Equivalent material: ISO 9, DIN 1.7223, AFNOR 42CD4TS, BS 708M40, UNI 41CrMo4, SS 2244, UNE 42CrMo4, AISI 4140, AISI 4142, SAE 4140, SAE 4142, JIS SNB22, JIS SNB22-1, JIS SNB22-2, JIS SNB22-3, JIS SNB22-4, JIS SNB22-5, EN 1.7223, GOST 40ChFA, GB/T 42CrMoE-1, ASTM 4142, UNS G41420

DIN 17212 Grade 41CrMo4 quenched and tempered (+QT) general

Property Temperature Value Comment
Density 23.0 °C Density of 7.8 - 7.9 g/cm³ Typical for Chromium Molybdenum Steel

DIN 17212 Grade 41CrMo4 quenched and tempered (+QT) thermal

Property Temperature Value Comment
Coefficient of thermal expansion 23.0 °C Coefficient of thermal expansion of 1.1E-5 - 1.4E-5 1/K Typical for Chromium Molybdenum Steel
Melting point - Melting point of 1382 - 1529 °C Typical for Chromium Molybdenum Steel
Specific heat capacity 23.0 °C Specific heat capacity of 448 - 502 J/(kg·K) Typical for Chromium Molybdenum Steel
Thermal conductivity 23.0 °C Thermal conductivity of 36 - 43 W/(m·K) Typical for Chromium Molybdenum Steel

DIN 17212 Grade 41CrMo4 quenched and tempered (+QT) chemical

Property Value
Carbon Carbon of 0.38 - 0.44 %
Chromium Chromium of 0.9 - 1.2 %
Manganese Manganese of 0.5 - 0.8 %
Molybdenum Molybdenum of 0.15 - 0.3 %
Phosphorus Phosphorus of 0.03 %
Silicon Silicon of 0.15 - 0.4 %
Sulfur Sulfur of 0.035 %

DIN 17212 Grade 41CrMo4 quenched and tempered (+QT) mechanical

Property Temperature Value Comment
Elastic modulus 23.0 °C Elastic modulus of 200 - 215 GPa Typical for Chromium Molybdenum Steel
Elongation 20.0 °C Elongation of 10 - 14 % -
Hardness, Rockwell F 20.0 °C Hardness, Rockwell F of 54 [-] -
Poisson's ratio 23.0 °C Poisson's ratio of 0.29 [-] Typical for Chromium Molybdenum Steel
Reduction of area 20.0 °C Reduction of area of 40 - 55 % -
Tensile strength 20.0 °C Tensile strength of 740 - 1270 MPa -
Yield strength 20.0 °C Yield strength of 510 - 880 MPa -

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