SEW 410 Grade G‑X3CrNiMoCuN26‑6‑3‑3 – Quenched ( +Q ) Stainless Steel with Superior Corrosion Resistance

G-X 3 CrNiMoCuN 26 6 3 3, higher corrosion resistance against non-oxidising acids, e. g. sulfuric acid. Increased strength. Not usable at temperatures over 300 °C. Cast parts used for the flue gas desulfurisation

Properties

General

Property	Temperature	Value
Density	20.0 °C	7.8 g/cm³

Mechanical

Property	Temperature	Value	Comment
Elastic modulus	23.0 °C	200 GPa	Typical for Duplex Stainless Steel
Elongation	20.0 °C	22 %
Poisson's ratio	23.0 °C	0.3 [-]	Typical for Duplex Stainless Steel
Shear modulus	23.0 °C	77 GPa	Typical for Duplex Stainless Steel
Tensile strength	20.0 °C	650 - 850 MPa
Yield strength Rp0.2	20.0 °C	480 MPa
	100.0 °C	390 MPa
	200.0 °C	330 MPa
	300.0 °C	295 MPa
	350.0 °C	280 MPa

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	100.0 °C	1.4E-5 1/K
	200.0 °C	1.45E-5 1/K
	300.0 °C	1.49E-5 1/K

Max service temperature		300 °C	Typical for Duplex Stainless Steel
Max service temperature, long		0 - 300 °C
Melting point		1375 - 1450 °C	Typical for Duplex Stainless Steel
Specific heat capacity	20.0 °C	450 J/(kg·K)
Thermal conductivity	20.0 °C	15 W/(m·K)

Chemical properties

Property	Value
Carbon	0.03 %
Chromium	24.5 - 26.5 %
Copper	2.75 - 3.5 %
Manganese	2 %
Molybdenum	2.5 - 3.5 %
Nickel	5 - 7 %
Nitrogen	0.12 - 0.25 %
Phosphorus	0.03 %
Silicon	1 %
Sulfur	0.02 %

SEW 410 Grade G-X2CrNiMoN25-7-4 Quenched Steel for High‑Performance Pump Components SAE J775 Grade EV‑8 – Comprehensive Mechanical Test Protocol (ST+P)

Metal