FCW B CrMo1
CrMo1 basic cored wire
Product description
– Basic flux-cored wire for gas-shielded arc welding
– Suitable for single and multi-pass welding of 1.25Cr-0.5Mo steels
– Optimum productivity by combining the advantages of tubular and staple-coated wires
– HDM guaranteed at < 4 ml/ 100g of metal deposited over the full range of usable parameters
– No moisture pick-up, excellent unwinding properties
– Designed for operating temperatures up to 550°C
Product application instructions
Chrome-molybdenum heat-resistant steels of corresponding grade Preheating to 150°C – 200°C and TTAS to 660°C – 700°C are recommended.
Examples
Heat-resistant steels EN 10028-2 13 CrMo 4-5 | EN 10083-1 25 CrMo 4 | EN 10222-2 14 CrMo 4-5 | ASTM A182 F11, ASTM A 199, A200 and A213 gr. T11& T12 | ASTM A217WC6, WC11, ASTM A335 gr.P11&P12
Welding positions: EN ISO 6947: PA, PB, (PF, PC – Ø 1.2 mm) | ASME IX: 1G, 1F, 2F, (3Gu, 2G – Ø 1.2 mm)
-
boiler construction,
-
steam piping and thermal networks,
-
thermal power plants,
-
petrochemical plants,
-
pressure equipment maintenance.
Wear resistance
Corrosion
Classification
| AWS A 5.29 | EN ISO 17634-A | EN ISO 17634-B | ASME IX Qualification |
|---|---|---|---|
| E80T5-B2-MH4 | T CrMo1 B M 3 H5 | T55T5-0M-1CM-H5 | QW-432 F-N° 6 / QW-442 A-N° 3 |
Chemical analysis (%)
| C | Mn | If | Cr | Mo |
|---|---|---|---|---|
| 0.06 | 1.1 | 0.4 | 1.2 | 0.5 |
Mechanical characteristics
| Rm (MPa) | Rp0.2 (MPa) | A5 (%) | KCV | |
|---|---|---|---|---|
| 650 | 580 | 23 | 20°C: 120 J | PWHT 1h/690°C |
Why choose this cored wire?
FCW B CrMo1 basic flux-cored wire is specially designed for welding low-alloy steels containing around 0.5% molybdenum and sometimes chromium.
This type of steel is commonly used in pressure applications and moderate-to-high-temperature environments.
Thanks to its basic formulation, CrMo1 offers excellent metallurgical quality, good creep resistance and optimum thermal resistance.
The advantages of CrMo1 welding wire:
-Excellent temperature resistance: ideal for applications up to 500-550°C, such as boilers, heat exchangers or steam pipes.
-Constant mechanical properties after heat treatment: compatible with post-weld tempering operations (PWHT).
– Basic coating = pure deposited metal: fewer defects, better mechanical performance and resistance to cracking.
Composition suitable for 0.5% Mo steels (13CrMo4-4, 15Mo3…): guarantees long-lasting, homogeneous melting.
-Stable arc and even fusion: suitable for both bottom passes and filling.
-Low diffusible hydrogen content: reduces the risk of cold cracking.
