1.4021, DIN X20Cr13, AISI ~410

1.4021, DIN X20Cr13, AISI ~410

Designation by Standards

 

Chemical Composition (in weight %)

Description
Stainless steel. Heat treatable chromium steel.

Applications
Machine components, valve and pump parts, cutlery, surgical instruments, steam turbine blades, small arms, sport articles, hand tools.

Physical properties (avarage values) at ambient temperature
Modulus of elasticity [GPa]: 215
Density [g/cm³]: 7.70
Thermal conductivity [W/m.K]: 30
Electric resistivity [Ohm mm²/m]: 0.60
Specific heat capacity[J/kg x K]: 460
Magnetizable: Yes

Soft Annealing
Annealing semi finished products: 745-825^oC + air.
Annealing plates and strips: 730-790^oC + air.

Stress Relieving
650-750^oC or below last tempering temperature.

Hardening
Hardening semi finished products: 950-1050^oC -> oil/air + 650-750^oC.
Hardening semi finished products: 950-1050^oC -> oil/air + 600-700^oC.
Hardening plates and strips: 950-1050^oC -> oil/air + 200-350^oC.
Hardening plates and strips: 950-1010^oC -> oil/air + 700-780^oC.
Hardening plates and strips: 950-1010^oC -> oil/air + 620-700^oC.

Tempering
See the bellow daigrams.

Forging
Hot forming temperature: 1100-800^oC, slow cooling.

Machinability
No data.

Welding
Conditional weldable with TIG, MIG, arc welding and resistance welding. Related filler metals: for example 1.4009; 1.4302; 1.4502; 1.4551; 2.4806. Preheating 300-400^oC. After cooling below Ms (120^oC) consecutively hardening and tempering or tempering.