Böhler DCMS-IG 1.7339 TIG welding rods

Welding rods (TIG rods) Böhler DCMS-IG, low-alloy, creep-resistant.

Standard designations:
- EN ISO 21952-A: W CrMo1Si
- AWS A5.28 / SFA-5.28: ER80S-B2Si

Application: TIG rod and wire for manual and mechanized welding processes in boiler and pipeline construction on steels containing 1.25% Cr and 0.5% Mo, as well as for welding quenched and tempered steels and case-hardening steels. Used preferably for steels 13CrMo4-5 and ASTM A335 P11/P12. Approved for long-term service at operating temperatures up to 570 °C. Suitable for step cooling. Bruscato X-factor < 15 ppm. The weld metal is known for good mechanical properties combined with good toughness and resistance to caustic cracking.

Base materials: creep-resistant steels and similar alloyed cast steel, case-hardening and nitriding steels with similar composition, similar alloyed quenched and tempered steels with tensile strengths up to 780 MPa, caustic cracking resistant steels: 1.7335 13CrMo4-5, 1.7262 15CrMo5, 1.7728 16CrMoV4, 1.7218 25CrMo4, 1.7258 24CrMo5, 1.7354 G22CrMo5-4, 1.7357 G17CrMo5-5; ASTM A193 B7, A335 P11/P12, A217 WC6.

Typical analysis of weld metal (wt.-%): C 0.1 | Si 0.6 | Mn 1.0 | Cr 1.2 | Mo 0.5 | P ≤0.015 | Sb ≤0.005 | Sn ≤0.006 | As ≤0.010.

Mechanical properties (typical values, min. in parentheses):
- Condition s1 (680 °C/1h): Rp0.2 520 (≥355) MPa, Rm 620 (≥550) MPa, A 25 (≥20) %, KV +20 °C 240 (≥54) J, KV -30 °C 180 (≥54) J
- Condition s2 (620 °C/1h): Rp0.2 580 (≥470) MPa, Rm 690 (≥550) MPa, A 24 (≥19) %, KV +20 °C 200 (≥54) J, KV -30 °C 170 (≥54) J

Processing: Adjust preheating, interpass temperature, and post-weld heat treatment to the base material. Current type DC. Shielding gas according to EN ISO 14175: I1 (argon).

Rod marking: + W CrMo1Si / ER80S-B2Si (previous marking + W CrMo1Si / 1.7339).

Dimensions according to data sheet: 1.0 / 1.2 / 1.6 / 2.0 / 2.4 / 3.0 x 1000 mm.

Approvals: TÜV (00727), CE.

Source of technical information: Voestalpine Böhler data sheet BÖHLER DCMS-IG (08/2023).