Global · Enterprise standard

BÖHLER S400

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Chemical composition

wt% · log scale

min – max range
typical value

Mechanical properties

value range by condition

Physical properties

vs. temperature

Mean thermal expansion 10⁻⁶/K

Chemical composition

Element	min	max	Similar	Remarks
C		1.02
Cr		3.8
Mn		0.3
Mo		8
Si		0.4
V		1.9
W		1.8

Mechanical properties

Heat treatment / condition	Yield strength	Tensile strength	Elongation	Reduction of area	Impact energy	Hardness
forgings, annealed						HR 64–69 HB-After annealing; HRC-after tempering.；HB ≤280 HB-After annealing; HRC-after tempering.

Physical properties

Temperature

20.0

Elastic modulus	Mean thermal expansion	Thermal conductivity	Specific heat	Resistivity	Density	Poisson's ratio
217.00		19.00	460.00	0.65	8.30

100.0

Elastic modulus	Mean thermal expansion	Thermal conductivity	Specific heat	Resistivity	Density	Poisson's ratio
	11.00

200.0

Elastic modulus	Mean thermal expansion	Thermal conductivity	Specific heat	Resistivity	Density	Poisson's ratio
	11.50

300.0

Elastic modulus	Mean thermal expansion	Thermal conductivity	Specific heat	Resistivity	Density	Poisson's ratio
	11.90

400.0

Elastic modulus	Mean thermal expansion	Thermal conductivity	Specific heat	Resistivity	Density	Poisson's ratio
	12.30

500.0

Elastic modulus	Mean thermal expansion	Thermal conductivity	Specific heat	Resistivity	Density	Poisson's ratio
	12.40

600.0

Elastic modulus	Mean thermal expansion	Thermal conductivity	Specific heat	Resistivity	Density	Poisson's ratio
	12.50

700.0

Elastic modulus	Mean thermal expansion	Thermal conductivity	Specific heat	Resistivity	Density	Poisson's ratio
	12.50

Typical physical values

Density	Elastic modulus	Poisson's ratio	Remarks
7.67–7.84	190.00–210.00	0.27–0.30	Typical properties for low-carbon high-alloy steel. These values are not given by the standard; they are indicative only and must not be used for design.

Similar grades

Grade	Region	System
BR885	Global	Enterprise standard