Key Takeaways

• Type: Flux-cored hard-facing wire (gas-shielded).
• Composition: Iron-based alloy with chromium and carbon for wear protection.
• Diameter / Spool: .045 in (1.1 mm) × 33 lb (15 kg).
• Hardness: ~55–60 HRC after cooling — ideal for metal-to-metal wear.
• Applications: Earth-moving equipment, agricultural blades, crusher rolls, and heavy fabrication repair.

Why Use Hard-Face Wire

THF-700HT is designed for severe abrasion under moderate impact. The self-shielded flux core allows outdoor repair without external shielding gas, making it a reliable choice for field maintenance. Operators report a smooth arc, good slag release, and minimal spatter — critical when you’re rebuilding high-value components on tight downtime.

Performance and Best Uses

• Excellent metal recovery: high deposition rate and dense overlay.
• Good for carbon or low-alloy base metals.
• One-pass or multi-layer capable: each layer retains hardness after cooling.
• Shielding gas required: 100% Co2 or 75/25 Argon/Co2, and run on DC-electrode positive polarity.

Comparison Table

Model	Key Specs	Best For	ArcWeld Store	Amazon
Washington Alloy THF-700HT-173	.045 in (1.1 mm) × 33 lb • Flux-Cored • Hardness 55–60 HRC • DC+	Rebuilding worn parts • Outdoor repairs • Earth-moving & crusher components	Washington Alloy THF-700HT-173 Hard Face Flux-Cored Mig Wire .045 x 33 Lb. Spool $357.05 In Stock View Product ">View at Arc Weld Store	Amazon Listing

Safety Notes

Follow AWS A5.21 and manufacturer recommendations for fume extraction and ventilation. Use appropriate PPE: welding helmet (ANSI Z87.1), FR gloves, and sleeves. Hard-facing fumes may contain chromium and manganese — maintain air quality per OSHA 1910.252 standards.

FAQ

Q: Can this wire run on a 200 A MIG machine?
A: Yes. It performs best between 180–250 A with 20–25 V, depending on feed speed.

Q: Does it need a shielding gas?
A: Yes. THF-700HT is gas-shielded flux-cored wire, use 100% CO2 or 75% Argon / 25% CO2

Q: Can I machine the overlay afterward?
A: Limited — the deposit is very hard. Use grinding rather than cutting tools.

Q: What base metals work best?
A: Mild or low-alloy steels — avoid high-carbon or hardened substrates without preheat.

Where to Buy

Washington Alloy THF-700HT-173 Hard Face Flux-Cored Mig Wire .045 x 33 Lb. Spool

$357.05

In Stock

View Product

If unavailable, there is a 10# version as well at:

10-LB Spool .045" Washington Alloy 700-HT Hardfacing/Hardsurfacing Flux-Cored Mig Wire

• Hardsurfacing of rollers, conveyor screws, crusher rolls and mill hammers, tanks, truck bodies, farm implements, pipes, steel castings or forgings
• 1- Each .045 x 10lb Spool (8" Spool)
• Hardness HRc: 58-61
• Use Shielding gas: 100% Co2 OR (75/25 Argon/CO2)
• DCEP - 150-180 Amp

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Last update on 2026-04-09 / Affiliate links / Images from Amazon Product Advertising API

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