WSG ER70S-B2L
TIG welding rods for creep resisting steels

Classification DIN EN ISO

21952-B W 1CML

Material No.

-

Classification AWS

A5.28 ER70S-B2L

Approvals

CE

Characteristics and application

TIG/GTAW rod for high temperature creep resistant 1.25%Cr-0.5%Mo ferritic steel, i.e. P11/P12. These steels are used for creep resisting applications up to ~550°C. Typical applications in power generation plant include steam piping, turbines and boilers; the alloy also finds applications in the chemical and petro-chemical industries. The wire has low levels of tramp elements (eg. Sn, As, Sb and P) providing a low Bruscato Factor (X < 10 ppm) for temper embrittlement resistant applications.

This type is identical to ER 80S-B2 except the lower Carbon content. Strength and Hardness of the weld metal may be lowerd leading to a higher resistance to cracking which is beneficial when the weldments are left in the as welded condition.

Base materials

For matching 1.25%Cr-0.5%Mo creep resisting ferritic steels.
13CrMo 4-5, 16CrMo 4-4, GS-17CrMo 5-5
ASTM: A182 grades F11/F12, A199/A200 T11, A217 grades WC6/WC11, A234 grades WP11/WP12, A335 grades P11/P12, A387 grades 11/12

Typical analysis in %

C: 0,03
Si: 0,54
Mn: 0,53
Cr: 1,39
Mo: 0,50

Yield strength in Mpa

≥ 400

Tensile strength in Mpa

≥ 520

Elongation in %

4d/5d: ≥19

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

-

Typical heat treatment

Preheat temperature: approx. 200°C
Interpass temperature: max. 300°C
PWHT: approx. 620°C - 690°C

Other products

SAW: UP-100 CrMo1 (S2CrMo1)
MIG/GMAW: ED-SG CrMo1, ED-ER80S-B2, ED-ER70S-B2L
TIG/GTAW: WSG CrMo1, WSG ER80S-B2
Gas welding:U 49 CrMo (G V)