1.4006, DIN X15Cr13, AISI 410

 1.4006, DIN X15Cr13, AISI 410

Designation by Standards

 

Chemical Composition (in weight %)

Description
PK2 is the basic martensitic stainless which will attain high mechanical properties after heat treatment. It has good impact strength, corrosion and scaling resistance up to 649^oC.

Applications
Cutlery, steam and gas turbine blades and buckets, bushings, valve components, fasteners, screens and kitchen utensils.

Physical properties (avarage values) at ambient temperature
Modulus of elasticity [10³ x N/mm²]: 216
Density [g/cm³]: 7.73
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 750-800^oC, cool slowly in furnace.

Stress Relieving
Stress relieving to remove machining stresses should be carried out by heating to approx. 650^oC, holding for 1-2 hours at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.

Hardening
Harden from a temperature of 980-1030^oC followed by oil or air quenching.

Tempering
Tempering temperature: 700-750^oC

Mechanical properties at at ambient temperature
Condition: annealed
Hardness: max. 225 HB
Tensile strength: max. 720 N/mm²

Condition: annealed and hardened
Hardness: 180-230 HB
0.2 % proof stress: 450 N/mm²
Tensile strength: 650-800 N/mm²
Elongation: min. 14%
Impact strength: 30 J

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

Forging
Hot forming temperature: 1100-800^oC.

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.

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

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.

Cold working
Readily cold formed using most of the common practices.