General Description

PH13-8 Mo (UNS S13800) is a martensitic precipitation-hardening stainless steel that has excellent strength, high hardness, superior toughness and good corrosion resistance. PH13-8 Mo is produced by NIWIRE utilizing VIM+ESR or VIM+VAR, which makes this alloy with low carbon composition and good transverse toughness.

Chemical Composition

Grade Fe% Ni% Cr% C% Mn% Si% S% N% Al% P%
PH13-8 Mo Bal. 7.50-8.50 12.25-13.25 Max 0.05 2.0-2.5 Max 1.0 Max 0.01 Max 0.01 0.90-1.35 Max 0.008


UNS S13800

Werkstoff Nr. 1.4534



PH13-8 Mo Bar: ASTM A564

PH13-8 Mo Sheet/Plate: ASTM A693

PH13-8 Mo Forging: ASTM A705

Physical Properties

Density:7.76 g/cm3

Melting Point: 1405°C-1470°C


Ground Bar, Ground Rod, Sheet/Plate/Strip, Forgings, Rings are available.

Mechanical Properties

Heat Treatment Tensile MPa Yield MPa Elongation % HRC
A Min 1010 Min 825 Min 17 Max 33
H950 Min 1545 Min 1440 Min 12 Max 47
H1000 Min 1475 Min 1405 Min 13 Max 45
H1050 Min 1305 Min 1235 Min 15 Max 43
H1100 Min 1010 Min 1030 Min 18 Max 35
H1150 Min 995 Min 720 Min 20 Max 33
H1150M Min 890 Min 585 Min 22 Max 32

    Request a Quote

    Fill in our online form to get a fast quote. for more general enquiries please email us at