Finland · SFS

1.4439

SFS EN 10088-4

Chemical composition

wt% · log scale

min – max range
typical value

Mechanical properties

value range by condition

Physical properties

vs. temperature

Elastic modulus GPa

Mean thermal expansion 10⁻⁶/K

Chemical composition

Element	min	max	Similar	Remarks
C		0.03
Cr	16.5	18.5
Mn		2
Mo	4	5
N	0.12	0.22
Ni	12.5	14.5
P		0.045
S		0.015		For machinability %S=0
Si		1

Mechanical properties

Heat treatment / condition	Yield strength	Tensile strength	Elongation	Reduction of area	Impact energy	Hardness
cold-rolled strip, Solution annealed, t <= 8 mm	≥290	580–780	≥35 Elongation after fracture; Lo=80mm or Lo=50mm
hot-rolled heavy plate, Solution annealed, <= 75 mm	≥270	580–780	≥40 Elongation after fracture; Lo=80mm or Lo=50mm		≥60 KV (ISO-V); t > 10 mm; for longitudinal direction impact energy is minimum 100J
hot-rolled strip, Solution annealed, <= 13.5 mm	≥270	580–780	≥35 Elongation after fracture; Lo=80mm or Lo=50mm		≥60 KV (ISO-V); t > 10 mm; for longitudinal direction impact energy is minimum 100J

Physical properties

Temperature

20.0

Elastic modulus	Mean thermal expansion	Thermal conductivity	Specific heat	Resistivity	Density	Poisson's ratio
200.00		14.00	500.00	0.85	8.00

100.0

Elastic modulus	Mean thermal expansion	Thermal conductivity	Specific heat	Resistivity	Density	Poisson's ratio
194.00	16.00

200.0

Elastic modulus	Mean thermal expansion	Thermal conductivity	Specific heat	Resistivity	Density	Poisson's ratio
186.00	16.50

300.0

Elastic modulus	Mean thermal expansion	Thermal conductivity	Specific heat	Resistivity	Density	Poisson's ratio
179.00	17.00

400.0

Elastic modulus	Mean thermal expansion	Thermal conductivity	Specific heat	Resistivity	Density	Poisson's ratio
172.00	17.50

500.0

Elastic modulus	Mean thermal expansion	Thermal conductivity	Specific heat	Resistivity	Density	Poisson's ratio
165.00	18.00

Typical physical values

Density	Elastic modulus	Poisson's ratio	Remarks
7.61–8.10	190.00–215.00	0.27–0.30	Typical material properties for stainless steel. These values are not taken from the standard; they are indicative and must not be used for design.
7.86	190.00–210.00	0.27–0.30	Material properties for low-carbon, high-alloy steel. These values are not taken from the standard; they are indicative and must not be used for design.

High/low temperature

Yield strength Rp0.2 (MPa)

Condition	Temperature ℃	max
heavy plates	sheets	400
heavy plates	sheets	350
heavy plates	sheets	300
heavy plates	sheets	250
heavy plates	sheets	200
heavy plates	sheets	150
heavy plates	sheets	100

Similar grades

Grade	Region	System
4439-317-26-E	International standard	ISO
1.4439	Italy	UNI
X 2 CrNiMoN 17 13 5	Italy	UNI
1.4439	Spain	UNE
X 2 CrNiMoN 17 13 5	Spain	UNE
1.4439	Romania	STAS
X 2 CrNiMoN 17 13 5	Romania	STAS
1.4439	Sweden	SS
X 2 CrNiMoN 17 13 5	Sweden	SS
1.4439	Switzerland	SNV
X 2 CrNiMoN 17 13 5	Switzerland	SNV
X 2 CrNiMoN 17 13 5	Finland	SFS
1.4439	Poland	PN
X 2 CrNiMoN 17 13 5	Poland	PN
1.4439	Austria	ONORM
X 2 CrNiMoN 17 13 5	Austria	ONORM
1.4439	Norway	NS
X 2 CrNiMoN 17 13 5	Norway	NS
1.4439	Belgium	NBN
X 2 CrNiMoN 17 13 5	Belgium	NBN
1.4439	Hungary	MSZ
X 2 CrNiMoN 17 13 5	Hungary	MSZ
1.4439	Czech Republic	CSN
X 2 CrNiMoN 17 13 5	Czech Republic	CSN
1.4439	Bulgaria	BDS
X 2 CrNiMoN 17 13 5	Bulgaria	BDS
1.4439	United Kingdom	B.S.
X 2 CrNiMoN 17 13 5	United Kingdom	B.S.
1.4439	France	AFNOR NF
X 2 CrNiMoN 17 13 5	France	AFNOR NF
X 2 CrNiMoN 17 13 5	Germany	DIN
1.4439	Germany	DIN