Stainless Steel Grade AISI 303Cu | EN 1.4570 | DIN X6CrNiCuS18-9-2

AISI 303Cu | EN 1.4570 | DIN X6CrNiCuS18-9-2 is an austenitic chromium-nickel stainless steel containing copper. Due to its copper content, it provides good corrosion resistance and machinability. It has good cutting adhesion properties and is highly resistant to high temperatures.

Mechanical properties

Table: mechanical properties of stainless steel grade AISI 303Cu | EN 1.4570 | DIN X6CrNiCuS18-9-2
Tensile strength, min., MPa	500-710
Yield strength, 0.2%, MPa	175
Relative elongation, min., %	35
Hardness, HB type	215

Physical properties

Table No. 1: physical properties of stainless steel grade AISI 303Cu | EN 1.4570 | DIN X6CrNiCuS18-9-2
Density g/cm³	7,8
*Specific heat capacity at +20°C, J/kgK**	500
*Thermal conductivity at +20°C, W/mK**	15
*Specific electrical resistance at +20°C, μOhmm**	0,73
Magnetic properties	non-magnetic

Table No. 2: physical properties of stainless steel grade AISI 303Cu | EN 1.4570 | DIN X6CrNiCuS18-9-2
Temperature	+20°С	+100°С	+200°C	+300°С	+400°С	+500°С
Modulus of elasticity, GPa	200	194	186	179	172	165
Coefficient of linear expansion, 10^-6/°C	16,0	16,0	17,0	17,0	18,0	18,0

Processing

Hot deformation: temperature 1150 °C - 900 °C, air cooling. Solution bonding: temperature 1000 °C - 1100 °C, water and air cooling.

Welding

This alloy can be successfully welded by conventional fusion and resistance methods, but should not be joined by oxyacetylene welding. The use of filler metal is recommended if necessary.

Forging

Before forging, hold for 1 hour at 1177 °C. Do not work at temperatures below 1010 °C. After-work treatment with a solution is required before final hardening.

Table: chemical composition of AISI 303Cu | EN 1.4570 | DIN X6CrNiCuS18-9-2
Chemical composition of steel grade AISI 303Cu \| EN 1.4570 \| DIN X6CrNiCuS18-9-2
C	Si	Mn	P	S	Cr	Mo	Ni	Cu	N	Fe
<0,08	<1,0	<2,0	<0,045	0,15-0,35	17,0-19,0	<0,06	8,0-10,0	1,4-1,8	<0,11	Other