Welding Preheating Requirements for 1045 Carbon Steel
When you’re welding 1045 carbon steel, preheating isn’t just a good practice—it’s often essential for achieving sound welds that won’t crack or fail in service. The general rule of thumb is that 1045 steel (which contains 0.43–0.50% carbon) requires preheat temperatures ranging from 150°F to 400°F (65°C to 200°C), but the exact temperature depends on …
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