Postalloy® 30 Flux-coated Electrode
Postalloy® 30 is a high strength, ductile, crack resistant welding alloy specifically designed for welding problem steels such as, low alloy, high carbon or crack sensitive tool steels. Ideal for welding dissimilar steels- low alloy, spring steels, carbon steels, tool steels. The benefits of Postalloy® 30 include:
- Excellent joining characteristics - With the combination of balanced alloy chemistry and high strength, crack resistant weld deposits, the capability to weld dissimilar problem steels is outstanding.
- Carbon has no adverse effects - Carbon, the cause of most problems associated with weld cracking and hard spots, is rendered harmless.
- Acts as a shock absorber during operation - Since Postalloy® 30 does not respond to heat-treatment and remains ductile, it has the ability to withstand heavy impact or shock loading.
Specifications
Product Type
- Flux-coated Electrode
Applications
- Shafts and keyways
- Gear tooth buildup
- Stamping and forging dies
- Shovel teeth and blades
- Wear Plates
- Grousers
- Heat-treating parts
- Cracked steel casings
- Jigs and fixtures
- Chain links
Weld Deposit Properties
- Additional:
- Also available as semi-automatic welding wire 301-SPL and 301-FCG
- Tensile strength:
- Up to 120,000 psi
- Elongation:
- 35%
- Deposits cannot be flame-cut
- Machinable:
- Machinable with carbide tools
Welding Parameters
Current Type: DC Electrode Positive , AC
| Amps | Diameter |
|---|---|
| 50-80 | 3/32" (2.4mm) |
| 80-125 | 1/8" (3.2mm) |
| 100-150 | 5/32" (4mm) |
Welding Procedure:
Clean weld area of contaminants. Remove any defective or fatigued weld metal. Bevel heavy sections 90˚. Tilt the electrode about 15˚ in the direction of travel and use the lowest amperage possible. For certain high alloy steels, a preheat of 300-400 ˚F(149-204 ˚C) is recommended. Hold a short arc and use stringer beads. Peen to reduce stresses. Allow to cool and remove slag.
Packaging Options
| Diameter | Standard Packaging |
|---|---|
| 3/32" (2.4mm) | Resealable Plastic Box |
| 1/8" (3.2mm) | Resealable Plastic Box |
| 5/32" (4mm) | Resealable Plastic Box |