PH 13-8 Mo is a stainless steel with approximately 13% chromium and 8% nickel content that has good resistance to corrosion in general as well as to stress corrosion cracking. PH 13-8 Mo offers better mechanical properties in demanding environmental conditions in comparison to other materials based on iron. Precise control of the microstructure is achieved through vacuum melting and remelting. Medium to high strength can be achieved through precipitation hardening aging treatments.
Alloy 13-8PH Precipitation Hardening Alloy is produced in the annealed condition. This is also referred to the solution heat treated condition, or Condition A. Solution treat from 1675 to 1725°F (910 to 940°C) for 15 to 30 minutes at temperature. Air cool or oil quench to below 60°F (15°C) to effect complete transformation to martensitic. Aging is normally carried out from 950 to 1150°F(510 to 620°C), depending upon the desired final properties. Heat treatment is usually performed in air. Reducing atmospheres should not be used because of the potential for hydrogen contamination.
Areas of application for PH 13-8 Mo | 1.4534
Airframe structural components, water jet cutting equipment, injection molding equipment, motorsport components, fasteners, valves and fittings.
Chemical composition - limits in % |
Fe | Rest |
Cr | 12,25 - 13,25 |
Ni | 7,50 - 8,50 |
Mo | 2,00 - 2,50 |
Al | 0,90 - 1,35 |
Mn | max. 0,20 |
N | max. 0,10 |
Si | max. 0,10 |
C | max. 0,05 |
P | max. 0,01 |
Physical constants and thermal properties |
Density | 7,76 g/cm³ |
Melting point | 1404 °C |
Thermal conductivity at 20°C | 12,8 W/m · °C |
Elongation coefficient at 20-100°C | 13 μm/m · °C |
Typical mechanical properties (room temperature) |
H950 |
Yield strength | min. 1413 MPa |
Tensile strength | min. 1517 MPa |
Elongation | min. 10 % |
H1000 |
Yield strength | min. 1310 MPa |
Tensile strength | min. 1413 MPa |
Elongation | min. 10 % |
H1050 |
Yield strength | min. 1138 MPa |
Tensile strength | min. 1207 MPa |
Elongation | min. 12 % |