Golden Bridge
Golden Bridge (D502) Electrode
Golden Bridge (D502) Electrode
SKU:D502-3/32-11
AWS A5 Series Chart for Filler Metals
| AWS A5 Series Code | American Welding Society (AWS) Standard Title |
| AWS A5.1 | Carbon Steel Electrodes for Shielded Metal Arc Welding (SMAW) |
| AWS A5.2 | Carbon and Low-Alloy Steel Rods for Oxyfuel Gas Welding (OFW) |
| AWS A5.3 | Aluminum and Aluminum Alloy Electrodes for Shielded Metal Arc Welding (SMAW) |
| AWS A5.4 | Stainless Steel Electrodes for Shielded Metal Arc Welding (SMAW) |
| AWS A5.5 | Low-Alloy Steel Electrodes for Shielded Metal Arc Welding (SMAW) |
| AWS A5.6 | Copper and Copper-Alloy Electrodes for Shielded Metal Arc Welding (SMAW) |
| AWS A5.7 | Copper and Copper Alloy Bare Welding Rods and Electrodes |
| AWS A5.8 | Filler Metals for Brazing and Braze Welding. |
| AWS A5.9 | Carbon Steel Electrodes and Fluxes for Submerged Arc Welding (SAW) |
| AWS A5.10 | Bare Aluminum and Aluminum-Alloy Welding Electrodes and Rods. |
| AWS A5.11 | Nickel and Nickel Alloy Welding Electrodes for Shielded Metal Arc Welding (SMAW), Gas Tungsten Arc Welding (GTAW), and Plasma Arc Welding (PAW) |
| AWS A5.12 | Tungsten and Tungsten Alloy Electrodes for Arc Welding and Cutting |
| AWS A5.13 | Surfacing Electrodes for Shielded Metal Arc Welding (SMAW) |
| AWS A5.14 | Nickel and Nickel-Alloy Bare Welding Electrodes and Rods |
| AWS A5.15 | Welding Electrodes and Rods for Cast Iron |
| AWS A5.16 | Titanium and Titanium Alloy Welding Electrodes and Rods |
| AWS A5.17 | Carbon Steel Electrodes and Fluxes for Submerged Arc Welding (SAW) |
| AWS A5.18 | Carbon Steel Electrodes and Rods for Gas Shielded Arc Welding (GMAW) |
| AWS A5.19 | Magnesium Alloy Welding Electrodes and Rods |
| AWS A5.20 | Carbon Steel Electrodes for Flux Cored Arc Welding (FCAW) |
| AWS A5.21 | Bare Electrodes and Rods for Surfacing |
| AWS A5.22 | Stainless Steel Electrodes for Flux Cored Arc Welding (FCAW) |
| AWS A5.23 | Low-Alloy Steel Electrodes and Fluxes for Submerged Arc Welding (SAW) |
| AWS A5.24 | Zirconium and Zirconium-Alloy Electrodes and Rods for GTAW, GMAW, PAW (Plasma Arc Welding) |
| AWS A5.25 | Specification for Carbon and Low-Alloy Steel Electrodes and Fluxes for Electroslag Welding (ESW) |
| AWS A5.26 | Specification for Carbon and Low-Alloy Steel Electrodes for Electrogas Welding (EGW) |
| AWS A5.27 | Specification for Carbon and Low-Alloy Steel Electrodes and Rods for Gas Shielded Arc Welding |
| AWS A5.28 | Specification for Low-Alloy Steel Electrodes and Rods for Gas Shielded Arc Welding |
| AWS A5.29 | Specification for Low-Alloy Steel Electrodes for Flux Cored Arc Welding (FCAW) |
D502
D502 is a 1Cr13-type valve surfacing welding electrode with titanium-calcium coating, which can be used for both AC and DC applications and has good welding process performance. Due to the air quenching characteristics of surfacing layer, heat treatment is not required generally. The surfacing layer has uniform hardness, which can be annealed and softened at 750-800℃, and can be hardened again after being heated to 900-1000℃ for air cooling or oil quenching.
The product is suitable for the surfacing welding of carbon steel or alloy steel shafts and valves with working temperature below 450℃.
Chemical components of deposited metal (%)
Test item |
C |
Cr |
S |
P |
| Example value | 0.15 | 11.20 | 0.008 | 0.024 |
Hardness of surfacing layer: (Air cooling after welding)
Test item |
HRC |
| Example value | 45 |
Reference current (AC, DC)
Welding electrode diameter (mm) |
Φ2.5 |
Φ3.2 |
Φ4.0 |
Φ5.0 |
| Welding current (A) | 50-80 | 80-120 | 120-160 | 160-200 |
1. Before welding, the welding electrode must be baked at about 150℃ for 1h.
2. Before welding, the work piece should be preheated to above 300℃, and the corresponding hardness can be obtained by different heat treatments after welding.
2. Before welding, the work piece should be preheated to above 300℃, and the corresponding hardness can be obtained by different heat treatments after welding.
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| Diameter |
* 3/32 inches (2.5 mm), * 1/8 inches (3.2 mm), * 5/32 inches (4.0 mm), * 3/16 inches (5.0 mm) |
|---|---|
| Package |
11 lb (5 kg), 44 lb (20kg) |