MIG (GMAW) wires for creep resisting steels

Classification DIN EN ISO

21952-A G CrMo9

Material No.


Classification AWS

A5.28 ER80S-B8



Characteristics and application

MIG/GMAW wire for high temperature creep resistant 9%Cr-1%Mo martensitic steels, i.e. P9. The 9%Cr-1%Mo creep resistant alloy is used for service up to ~600°C particularly in environments involving hot hydrogen gas. Typical applications are found in oil refineries.

Base materials

For matching 9%Cr-1%Mo creep resisting martensitic steels.
ASTM: A182/A336 F9, A199/A213 T9, A217 C12, A234 WP9, A335 P9, A387 9
X12CrMo 9 1, GX12CrMo 10 1
1.7386, 1.7688, 1.7389

Typical analysis in %

C: 0,08
Si: 0,40
Mn: 0,60
Cr: 8,90
Ni: 0,20
Mo: 1,00

Yield strength in Mpa

≥ 470

Tensile strength in Mpa

≥ 590

Elongation in %

4d/5d: ≥18

Charpy-V-Value (ISO-V) in J


Typical heat treatment

Preheat temperature: 200°C
Interpass temperature: 300°C
PWHT: 745°C

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