Goodwin Alloy G130 is a gamma prime strengthened Nickel alloy specifically design for high temperature application heavy section castings.
Goodwin has performed successful welding trials and ASME IX weld qualifications for the G130 material for both casting repair and fabrication welding.
- Higher Creep Strength than cast Alloy 625 & 617
- More castable than alloy cast 740H or Alloy 282
- Better weldability than cast Alloy 282
- More stable microstructure than cast Alloy 740H or 263
- Better segregation characteristic than Nb or Mo containing Ni Alloys
- Excellent microstructural stability during service aging
- Lower cost than solid solution strengthened alloys – due to reduced wall thicknesses.
- Lower wall thickness – reduce in service thermal stresses during start-up cycles. (more flexible plant operation)
Long Term Stability of G130
Alloy g130 outline chemistry:
| Element | Symbol | Typical |
|---|---|---|
| Carbon | C | 0.015 |
| Silicon | Si | 0.20 |
| Manganese | Mn | 0.50 |
| Nickel | Ni | BAL |
| Chromium | Cr | 24.5 |
| Cobalt | Co | 19.5 |
| Niobium | Nb | 60° |
| Titinium | Ti | 60° |
| Aluminum | Al | 60° |
| Other | Ta + B Addition | |
Long Term Stability of G130
Typical mechanical properties for Alloy G130
| Test Temperature:20° Section Size: 100mm to 200mm (t=1/2 | ||
|---|---|---|
| Property | Unit | Typical |
| Tensile Strength | N/mm2 | 560 - 700 |
| Yield (0.2% proof) | N/mm2 | 360 - 420 |
| Elongation | % | 20 -30 |
| Reduction in Area | % | 25 - 40 |
| Avg Impact Strength | J | 80 - 130 |
Stress Rupture properties of G130
Stress Rupture comparison of G130 with other candidate Advanced Ultra Super Critical Alloys
G130 Microstructure:
A clean microstructure with grains of gamma with M23C6 carbides precipitated along each grain boundary. The alloy is designed to produce a very low fraction MX phase and to have a stable microstructure during service aging.