Global · Enterprise standard

Type 347

-- — -

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

Thermal conductivity W/(m·K)

Resistivity Ω·mm²/m

Chemical composition

Element	min	max	Remarks
C		0.08
Cr	17	19
Mn		2
Nb+Ta		1	10xC min
Ni	9	13
P		0.045
S		0.03
Si		0.75

Mechanical properties

Heat treatment / condition	Yield strength	Tensile strength	Elongation	Reduction of area	Impact energy	Hardness
heavy plate, steel strip, annealed, 1.54 mm, sheet	250	640	45		122

Physical properties

Temperature

20.0

Elastic modulus	Mean thermal expansion	Thermal conductivity	Specific heat	Resistivity	Density	Poisson's ratio
193.00				0.72	7.96

100.0

Elastic modulus	Mean thermal expansion	Thermal conductivity	Specific heat	Resistivity	Density	Poisson's ratio
	16.60	16.30	500.00	0.78

200.0

Elastic modulus	Mean thermal expansion	Thermal conductivity	Specific heat	Resistivity	Density	Poisson's ratio
				0.86

400.0

Elastic modulus	Mean thermal expansion	Thermal conductivity	Specific heat	Resistivity	Density	Poisson's ratio
				1.00

500.0

Elastic modulus	Mean thermal expansion	Thermal conductivity	Specific heat	Resistivity	Density	Poisson's ratio
		21.40

600.0

Elastic modulus	Mean thermal expansion	Thermal conductivity	Specific heat	Resistivity	Density	Poisson's ratio
	18.90			1.11

800.0

Elastic modulus	Mean thermal expansion	Thermal conductivity	Specific heat	Resistivity	Density	Poisson's ratio
				1.21

900.0

Elastic modulus	Mean thermal expansion	Thermal conductivity	Specific heat	Resistivity	Density	Poisson's ratio
				1.26

1000.0

Elastic modulus	Mean thermal expansion	Thermal conductivity	Specific heat	Resistivity	Density	Poisson's ratio
	20.50

Typical physical values

Density	Elastic modulus	Poisson's ratio	Remarks
7.61–8.10	190.00–215.00	0.27–0.30	不锈钢的典型材料性能数值，此值不来源于标准，它是指示性指标，不能被用于设计用途。
7.86	190.00–210.00	0.27–0.30	低碳，高合金钢材料性能属性数值，此值不来源于标准，它是指示性指标，不能被用于设计用途。

High/low temperature

Yield strength Rp0.2 (MPa)

Condition	Temperature ℃	max
heavy plates	sheets	816
heavy plates	sheets	732
heavy plates	sheets	649
heavy plates	sheets	538
heavy plates	sheets	427
heavy plates	sheets	204

Tensile strength Rm (MPa)

Condition	Temperature ℃	max
heavy plates	sheets	816
heavy plates	sheets	732
heavy plates	sheets	649
heavy plates	sheets	538
heavy plates	sheets	427
heavy plates	sheets	204

Fatigue

Test conditions

Item	Detail
Product	sheet; 1.54 mm thick; annealed; 2000 F (1093°C) air cooled
Experiment	T: 20°C
Specimen

Monotonic

Property	Value
Yield strength (MPa)	250.0
Tensile strength (MPa)	640.0
Elongation (%)	45.0

Stress life

No.	Cycles
1	1E7

Similar grades

Grade	Region	System
PK11NB	Global	Enterprise standard
Remanit 4550	Global	Enterprise standard
CLC 18-10Nb	Global	Enterprise standard
BÖHLER A750	Global	Enterprise standard
Carpenter Stainless Type 347	Global	Enterprise standard
X 6 CrNiNb 18 10	Germany	DIN
1.4550	Germany	DIN
1.4546	Germany	WL