A premium 307 ‘problem solving wire’ for welding Hardox 400, 450, and 500. This is a continuous solid corrosion resisting chromium-nickel-manganese wire for welding of austenitic stainless alloys of 18% Cr, 8% Ni, 7% Mn types.

OK Autrod 16.95 has a general corrosion resistance similar to that of the corresponding parent metal. The higher silicon content improves the welding properties, such as wetting.

The product is a modified variant of ER307, basically with a higher Mn content to make the weld metal less sensitive to hot cracking. When used for joining dissimilar materials the corrosion resistance is of secondary importance.

The alloy is used in a wide range of applications across the industry including:

• Joining of austenitic, manganese, work-hardenable steels
• Armourplate and heat treated / heat resistant steels
• Stainless steel to carbon steel
• Stainless to low-alloy steels
• Tool steels to mild steel

The benefits of 307:

• It handles different expansion rates very well without cracking
• High manganese content = absorbs stresses
• High Mn + Ni = very crack-tolerant
• Fully austenitic weld metal = no brittle martensite (martensite is a hard and very brittle solid hardened steel)
• Very high ductility (which means it bends for breaking / absorbs vibration / tolerates load stresses / resists cold cracking)
• Excellent tolerance of carbon pickup
• 307 is the problem-solver when cracking, hardness, or unknown steel is involved
• Great for unknown steel grades, old cast or repaired components
• Works for shock-loaded or vibrating parts
• It has excellent crack resistance, especially where normal 308/309 would fail
• 307 stays tough and ductile, even when the parent metal is hard or brittle

In stock at Spectrum Welding, Chesterfield.