1.4000, DIN X6Cr13, AISI 410S

1.4000, DIN X6Cr13, AISI 410S

Designation by Standards

 

Chemical Composition (in weight %)

Description
Creep resisting steel, hardened and tempered. Usual upper temperature limit for continuous operating 550^oC.

Applications
Construction of turbines, water and steam resistant ferritic steel components, parts for water turbines, valves, diff. machine parts, comp.for petrochemical and shipbuilding industry. machines and ships engines (sweet water), paper-, textile and dairy machines, vapor- and water armatures.

Physical properties (avarage values) at ambient temperature
Modulus of elasticity [10³ x N/mm²]: 216
Density [g/cm³]: 7.72
Thermal conductivity [W/m.K]: 30.0
Electric resistivity [Ohm mm²/m]: 0.60
Specific heat capacity[J/g.K]: 0.46

Coefficient of Linear Thermal Expansion 10^{-6 o}C^-1

Soft Annealing
Heat to 800-840^oC, cool slowly in furnace.

Hardening
Harden from a temperature of 950-1000^oC followed by oil or air quenching.

Tempering
Tempering temperature: 650-750^oC, air.

Mechanical properties at ambient temperature
Condition: Annealed+hardened+tempered
Average hardness: 130-185 HB
0.2 % proof stress: 250-400 N/mm²
Tensile strength: 400-600, 550-700 N/mm²
Elongation: 18-20 %
Impact strength: 85 J

0.2 % Proof Stress in N/mm² vs. Temperature in ^oC
Annealed Condition

Forging
Hot forming temperature: 1100-800^oC, slow cooling in furnace or in thermoinsulating material.

Machinability
Tough, draggy chips with heavy build-up. While this alloy can be machined in the annealed condition, it tends to perform better in the cold drawn or heat treated condition.

Welding
Most common methods of welding can be successfully employed with this alloy. To reduce the chance of cracking, it is advisable to preheat the workpiece to 177-204^oC. Post-weld annealing is recommended to reattain maximum ductility. Filler material is KW10-IG.

Corrosion Resistance
Not known for its exceptional corrosion resistance, this alloy will stand up well to mild atmospheric conditions and fresh waters.