Stainless pipe fitting,stainless fitting,duplex stainless,31803,32750,32760,we are one of largest sour service stainless fitting supplier according to ISO 10156.
Ni-Cr Based Solid Solution Strengthened Superalloy for Service up to 850℃
GH3039 (GH39) is a nickel-chromium based solid solution strengthened wrought alloy engineered for long-term exposure to high temperatures and oxidizing atmospheres. It delivers a practical combination of thermal stability, oxidation resistance, and ease of fabrication — making it a widely specified material for hot-section components across aerospace, industrial heating, and energy equipment.
Unlike alloys designed purely for peak temperature capability, GH3039 prioritizes reliability in the 600–850℃ window where most high-temperature systems actually operate. It welds readily, resists thermal fatigue, and maintains structural integrity through repeated cycling.
1. Key Advantages
- Oxidation resistance you can count on. Chromium content up to 22% forms a dense, adherent oxide film that protects surfaces in air, combustion gases, and cyclic heating conditions.
- Thermal fatigue stability. The fully austenitic structure handles repeated heating and cooling without the dimensional instability or cracking that can plague other alloys.
- Easy to fabricate. GH3039 accepts cold forming, rolling, bending, and TIG welding more readily than precipitation-hardened superalloys — reducing manufacturing complexity and lead time.
- Balanced, not over-engineered. Instead of pushing temperature limits at the cost of workability or toughness, GH3039 delivers consistent performance where it matters most: in the 600–850℃ operating band.
2. GH3039 Chemical Composition
| Element | Content (wt%) | Function |
|---|---|---|
| Cr | 19.0–22.0 | Provides oxidation resistance via protective oxide layer |
| Mo | 1.80–2.30 | Solid solution strengthening |
| Nb | 0.90–1.30 | Enhances high-temperature microstructural stability |
| Ti | 0.35–0.75 | Contributes to mechanical strength |
| Al | 0.35–0.75 | Supports oxidation resistance |
| Ni | Balance | Maintains stable austenitic matrix |
3. Mechanical & Physical Properties of GH39
| Property | Value |
|---|---|
| Density | ~8.3 g/cm³ |
| Melting range | 1370–1420℃ |
| Elastic modulus | ~196 GPa |
| Structure | Stable austenite, non-magnetic |
| Mechanical Property (Solution Treated) | Requirement |
|---|---|
| Tensile strength | ≥735 MPa |
| Yield strength | ≥345 MPa |
| Elongation | ≥30% |
| Hardness | ≤248 HB |
| Stress rupture (800℃ / 100h) | ≥110 MPa |
4. Applications
- Aerospace — combustion chamber components, afterburner liners, thin-gauge hot-section structural parts
- Industrial furnaces — continuous annealing furnace rollers, heat treatment fixtures, internal heating system structures
- Petrochemical & energy — high-temperature heat exchangers, cracking equipment internals, heat-resistant piping
5. C&N Hongcheng Supply & Support
We can supply wide variety of exotic alloy fasteners. Our special materials are Hastelloy C-276, Hastelloy C-22, Hastelloy B3, Incoloy 825, Incoloy 925, Incoloy 926, Incoloy 800HT, Inconel 600, Inconel 625, Inconel X-750, Inconel 725, Inconel 718, Monel 400, Monel404, Monel K500, Duplex 2205, Super Duplex UNS32750, Super Austentic 904L, Super Austentic F44, Titanium, Nimonic 80A, GH113, GH3039, GH2032, Precipitation-hardening 17-4PH, Super Austentic 20Cb-3, Super Austentic 6XN, Austentic 347H etc. Our hot forged fastener size range is from M5-M100.
We stock and process GH3039 in the forms most required by engineering projects:
- Plates and sheets
- Seamless tubes
- Round bars
- Forgings
- Custom-machined components to specification
Our team goes beyond material supply. We provide grade confirmation, international standard cross-referencing, non-standard dimension manufacturing, and CNC precision machining — all tailored to your project’s operating conditions.
6. Quality & Traceability
Every delivery includes:
- EN10204 3.1 / 3.2 material certificates
- PMI chemical analysis reports
- Heat number traceability
- Mechanical and high-temperature testing as required
- UT inspection and dimensional verification
Export packaging uses moisture-proof PE wrapping, seaworthy plywood cases, and steel pallet reinforcement. All products are permanently marked with grade, heat number, dimensions, and standard — ensuring full traceability from mill to delivery.
Need a reliable GH3039 supplier for your next project? Contact C&N Hongcheng for technical consultation, material selection support, or a quotation.
