Fe SGCrMo2, 2,25% Cr-1% Mo low alloy Rods for GTAW of Cr/Mo steel
Fe SGCrMo2, low alloy Rods for GTAW of 2,25% Cr-1% Mo creep resistant steels which are used for high temperature service.Suitable for root pass on pipe welding.
It´s mandatory to use inert backing gas to avoid crome oxidation.
A preheat and interpass temperature of not less than 185° C should be maintained during welding, to avoid cracks.
Applications: Vessels, Boilers fabrication, Chemical and Petrochemical industry, Piping fabrication.
Shielding Gas: 100% Ar
Available in 2.4 mm. diam and 1000 mm. cut length rods embossed on each end for ease of alloy identification even after the rod is partially consumed, and in 5 kgs pacs.
Typical Wire Analysis %:
C 0.07-0.12, Mn 0.40-0.70, Si 0.40-0.70, S 0.025, P 0.025, Cr 2.30-2.70, Mo 0.90-1.20, Ni 0.20, Cu 0.35
Typical Mechanical Properties:
Tensile strength: SR 650 MPa
Yield strength: SR 570 MPa
Elongation E 5d%: SR 22
Charpy V-Notch Impact Properties:
Testing Temp. 20° C SR 70 J
(SR= Post Weld Heat Treatment at 690° C x 1h)
The above data may change without prior notice.
AWS A5.28 ER 90S-B3 - UNS K30960
Chemical analysis
| Element | Value |
|---|---|
| Fe | resto |
| C | 0.08 |
| Mn | 0.60 |
| Si | 0.50 |
| Cr | 2.40 |
| Ni | <0.20 |
| Mo | 1.00 |
| Cu | 0.30 |
Print