Stainless Steel Grade AISI 310S | EN 1.4845

AISI 310S | EN 1.4845 | DIN X8CrNi25-21 | 20Х23Н18 - is a stainless steel that has high mechanical strength and impact toughness. It has excellent resistance to high-temperature oxidation due to the high content of chromium and nickel. And due to the low level of carbon, the release of carbides during welding or at high temperatures is reduced.

It should be noted that optimising steel for high temperatures means that its resistance to aqueous corrosion is limited.

Characteristic properties:

• Good oxidation resistance

• Good resistance to high temperature corrosion

• Good mechanical strength at elevated temperatures

Physical properties

Table: physical properties of stainless steel grade AISI 310S | EN 1.4845 | DIN X8CrNi25-21
Density g/cm³	7,9
Specific heat capacity J/kg · K	500
Thermal conductivity W/m · K	15
Specific electrical resistance Ω mm² / m	0,85

AISI 310S austenitic stainless steel is optimized for high temperatures. When used in other environments, this steel is equivalent to any other general-purpose austenitic stainless steel.

Can be successfully used in chloride environments with a relatively low concentration of chlorine-containing substance.

Withstands temperatures up to 1050 °C in air.

Mechanical properties

Table: mechanical properties of stainless steel grade AISI 310S | EN 1.4845 | DIN X8CrNi25-21
Tensile strength RmN/mm²	500 - 700
Yield strength Rp ≥ N/mm²	210
Relative elongation A5 ≥ %	35
Hardness HB	192
Resistance to air at ℃	1050 - 1150
Modulus of elasticity kN/mm²	196

Table: chemical composition of steel grade AISI 310S | EN 1.4845 | DIN X8CrNi25-21
Chemical composition of steel grade AISI 310S \| EN 1.4845 \| DIN X8CrNi25-21
C	Si	Mn	P	S	Cr	Ni	N	Fe
<0,01	<1,5	<2,0	<0,045	<0,015	24,0 - 26,0	19,0 - 22,0	<0,10	Other

Heat-resistant stainless steel

AISI 310S is a material that is very resistant to carbon deposits and corrosion in a high-temperature environment. The ability to withstand heat and high temperatures is provided by the use of alloying impurities in the alloy. Special additives bind iron atoms and prevent the oxidation process from spreading throughout the material.

Heat-resistant stainless steel is not subject to deformation in a high-temperature environment and retains its original shape during long-term use. This allows the alloy to be widely used in both the chemical and food industries, in construction and electric power engineering. The Ukrainian market offers a fairly wide variety of stainless rolled metal products of this brand.