The 312 stainless steel welding rod is an AWS E312-classified electrode designed for welding stainless steels to carbon steels or other dissimilar metals. Its versatile flux coating provides a smooth arc and good slag control, enabling it to deliver strong, corrosion-resistant welds that resist cracking and spalling.
Commonly used in repair work, overlay, and maintenance welding, the 312 rod offers excellent resistance to heat and oxidation, making it suitable for high-temperature service applications and cast iron welding.
Key Features
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Dissimilar Metal Welding: Ideal for joining stainless steel to carbon steel and cast iron
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High Heat & Corrosion Resistance: Suitable for applications requiring oxidation resistance
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Good Slag Removal: Produces a thin, easily chipped slag for clean welds
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All-Position Welding: Can be used flat, vertical, horizontal, or overhead
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AWS Certified: Meets AWS A5.4/E312 classification standards
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Stable Arc: Smooth arc for easy weld control and minimal spatter
Typical Applications
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Overlay and build-up welding for repair and maintenance
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Welding stainless steel pipes, tanks, and vessels to carbon steel components
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High-temperature components such as exhaust systems and furnace parts
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Cast iron welding and repair
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Chemical processing equipment requiring corrosion-resistant welds
Specifications
| Diameter (mm) | Length (mm) | Recommended Welding Current (AC/DC) | Typical Use |
|---|---|---|---|
| 2.5 (3/32″) | 350 | 40 – 90 A | Thin sections, repair welding |
| 3.2 (1/8″) | 350 | 70 – 130 A | General fabrication and overlays |
| 4.0 (5/32″) | 350 | 100 – 160 A | Thick sections and heavy repairs |
Chemical Composition (Typical Weld Metal %)
| Element | C | Mn | Si | Cr | Ni | P | S |
|---|---|---|---|---|---|---|---|
| Value | 0.08 | 1.2 | 0.6 | 25.0 | 12.0 | 0.04 | 0.03 |
Mechanical Properties (Typical Weld Metal)
| Property | Value |
|---|---|
| Tensile Strength | 550 MPa (80,000 psi) |
| Yield Strength | 320 MPa (46,000 psi) |
| Elongation | 35% |
| Impact Toughness | 65 J @ -20°C |
Welding Performance
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Arc Characteristics: Smooth, stable arc with easy starting and control
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Penetration: Medium penetration suitable for overlay and buildup welding
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Slag: Thin, friable slag that removes cleanly after welding
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Polarity: Compatible with AC and DC welding currents
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Versatility: Effective for welding a wide range of dissimilar metals
Packaging & Supply
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Available in moisture-resistant 5kg and 10kg boxes
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Custom OEM packaging options
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Flexible minimum order quantities for trials and bulk purchases
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Prompt international delivery supported by experienced logistics
Why Choose Our 312 Stainless Steel Welding Rod?
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Factory-direct quality with stringent quality assurance
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Meets or exceeds AWS A5.4 standards for consistent performance
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Competitive pricing with OEM/ODM customization options
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Trusted by customers across Africa, South America, and Asia
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Dedicated technical support for all welding applications
Ready to Order?
Get in touch with our sales team for quotes, sample requests, or expert technical assistance. Secure your supply of high-quality 312 stainless steel welding rods for durable and reliable dissimilar metal welds.
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