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SFA 5.9: ER420 is a solid wire electrode for GMAW, often used for surfacing applications which need superior resistance to abrasion. It requires preheat and inter-pass temperatures ≥ 225ºC, followed by slow cooling. Post weld heat treatment is used to temper the weld deposit. SFA 5.9: ER420 is similar to SFA 5.9: ER410, but with higher chromium and carbon content which increases the wear resistance.
Alloy ER 420 is often used for surfacing applications that call for superior resistance to abrasion. This filler metal is similar to ER 410, except for the higher carbon content. It requires preheat and interpass temperatures of not less than 400ºF, followed by slow cooling.
0.8mm 1.0mm 1.2mm 1.6mm
Packaging: 1kg,5kg ,15kg,250kg,350kg
Tensile strength(Mpa)： |
|
Yield stress(Mpa): | ≥400 |
Elongation (%） | ≥470 |
Impact values | ≥16 |
Chemical Composition Limits | ||||||||||
Weight% | C | Mn | Si | Cr | Ni | S | P | Mo | Cu | |
ER 420 | 0.25-0.40 | 0.6 max | 0.5 max | 12-14 | 0.6 max | 0.03 max | 0.03 max | 0.75 max | 0.75 max | |
Diameter(mm) | 0.8 | 1.0 | 1.2 |
Current/A | 70-150 | 100-200 | 140-220 |
- Rusty, water, oil and other impurity should be cleaned before welding 2. Shield gas: 100%C02 or 80%Ar&20%C02
- Gas speed: 15-25l/Min
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