Metal & Flux Cored Wire
E71T-1M/9M Gas-Shielded Flux Cored Welding Wire
E71T-1M/9M is a gas-shielded flux cored welding wire classified under AWS A5.20 for suitable carbon steel and low-alloy steel applications. Its dual classification meets applicable E71T-1M and E71T-9M requirements, making it a candidate for specification-driven structural steel fabrication and industrial welding.
Product Features
- Dual AWS classification: Classified as E71T-1M and E71T-9M, subject to verification of the supplied TDS and certificate.
- Mixed-gas operation: Designed for an approved argon–CO₂ shielding gas mixture; confirm the exact composition with the manufacturer.
- All-position welding: Suitable for applicable welding positions when confirmed by the product classification and TDS.
- Stable welding performance: Product-specific characteristics may include a stable arc, controlled spatter, good bead formation, and removable slag.
- Structural fabrication suitability: Can be considered for single-pass and multi-pass welding where the approved procedure permits.
- Specification-based selection: Verify tensile strength, elongation, impact toughness, and any additional project requirements before procurement.
Typical Applications
E71T-1M/9M may be used in qualified welding procedures for:
- Structural steel fabrication and steel frame assembly
- Shipbuilding and barge construction
- Bridge and heavy steel structure fabrication
- Construction machinery and industrial equipment
- General fabrication involving suitable mild and low-alloy steels
- Multi-pass welding where the project specification requires the applicable dual classification
Actual suitability depends on the base metal, joint design, service conditions, applicable code, and approved welding procedure.
Chemical Composition
The following table provides commonly published AWS classification-level maximum limits for E71T-1M-type deposited weld metal. Verify the applicable standard edition and the specific E71T-1M/9M product requirements before procurement.
Element | Classification-Level Limit (wt.%) |
|---|---|
Carbon (C) | ≤ 0.12 |
Manganese (Mn) | ≤ 1.75 |
Silicon (Si) | ≤ 0.90 |
Phosphorus (P) | ≤ 0.030 |
Sulfur (S) | ≤ 0.030 |
Chromium (Cr) | ≤ 0.20 |
Nickel (Ni) | ≤ 0.50 |
Molybdenum (Mo) | ≤ 0.30 |
Vanadium (V) | ≤ 0.08 |
Copper (Cu) | ≤ 0.35 |
71T-1M/9M vs. E71T-1C Flux Cored Welding Wire
Comparison | E71T-1M/9M | E71T-1C |
|---|---|---|
Shielding gas designation | Mixed-gas classification | CO₂ classification |
Classification coverage | Dual-classified to applicable -1M and -9M requirements | Classified to applicable -1C requirements |
Main selection factor | Approved mixed gas and specified mechanical properties | CO₂ compatibility and specified mechanical properties |
Impact requirements | Verify the applicable -1M and -9M requirements | Verify the applicable -1C requirements |
Procurement check | Confirm both classifications on the product documentation | Confirm the -1C classification and recommended parameters |
Related Carbon Steel Flux Cored Welding Wires
Choosing between flux cored welding wire classifications? Compare these related GD WELD products:
- E71T-9M Flux Cored Welding Wire — for applications requiring the E71T-9M classification and compatible mixed-gas welding procedures.
- E71T-9C Flux Cored Welding Wire — for applications requiring the E71T-9C classification; verify shielding gas and impact requirements before selection.
