Material Data Sheet 1.4439, X2CrNiMoN17-13-5

Material data for 1.4439

The material 1.4439 is a stainless steel with the abbreviation X2CrNiMoN17-13-5. In the American ASME standard, it has the designation UNS S31726.

How far does the scope of the information listed here extend?

The data below applies to hot-rolled and cold-rolled sheet and strip from our product range.

The information given here on properties/usability is not a guarantee of properties, but is for descriptive purposes only. The information is for advisory purposes and is based on information from the standards/sources: DIN EN 10088-2, DIN EN 10028-7, AD 2000 W2/W10, ASME code SA240/480, reference book Steel Code.

We cannot accept any liability for the information or the results of processing/application.

What are other designations for 1.4439?

ASME (incl. double attestation): UNS S31726

EN (incl. double attestation): 1.4439

How is the material 1.4439 heat-treated and processed?

Temperature: 1.060–1.140 °C
Cooling methods: Water, air
Microstructure: austenitic
Microstructure Polishable: yes
Possible welding processes: Gas-shielded welding, arc welding, resistance welding

	C	Si	Mn	P	S	Cr	Ni	Mo	N
min						17,000	13,500	4,000	0,120
max	0,030	0,750	2,000	0,030	0,015	18,500	14,500	5,000	0,200

min

17,000

13,500

4,000

0,120

max

0,030

0,750

2,000

0,030

0,015

18,500

14,500

5,000

0,200

Mechanical properties at room temperature:

(in the solution-annealed state)

The values below take into account the above-mentioned double attestations. Limit values from EN 10088-2, EN 10028-7, AD 2000 W2/W10 and according to ASME SA240/480.

C = cold-rolled strip; H = hot-rolled strip; P = plate

In accordance with AD 2000 regulations, the KBZ is only carried out and confirmed in the certificate for thicknesses > 20 mm.

		Yield strength	Tensile Strength	BElongation at break	Notch impact energy (ISO-V)
C	8	290	320	580–780	35	35	60
H	13,5	270	310	580–780	35	35	60
P	75	270	310	580–780	40	40	60

Yield strength

Tensile Strength

BElongation at break

Notch impact energy (ISO-V)

Product form

Thickness [mm] max

Rp_0,2

Rp_1,0

A₅

A₅₀

≥ 10 mm Thickness

[N/mm2] min

[N/mm2]

[%] min

[J] transverse

290

320

580–780

13,5

270

310

580–780

270

310

580–780

Density at 20 °C	Modulus of elasticity at 20 °C	Specific heat capacity at 20 °C	Thermal conductivity at 20 °C	Electrical resistance at 20 °C
8	200	0,50	14	0,85

Density
at 20 °C

Modulus of elasticity
at 20 °C

Specific heat capacity
at 20 °C

Thermal conductivity
at 20 °C

Electrical resistance
at 20 °C

kg/dm³

GPa

J / g x K

W / K x m

Ω x mm² / m

200

0,50

0,85

Field of application

Plant engineering, petrochemical industry, chemical industry, mechanical engineering. Resistant to high chlorine concentrations and temperatures. As delivered, the steel is resistant to intergranular corrosion (e.g. ASTM A262 Pr. E / EN 3651-2); in the welded condition, resistance is also guaranteed due to the low C content.

Material No.: 1.4439

Material data for 1.4439

How far does the scope of the information listed here extend?

What are other designations for 1.4439?

How is the material 1.4439 heat-treated and processed?

Chemical Composition:

Mechanical properties at room temperature:

(in the solution-annealed state)

Physical properties:

Field of application

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