Bar and Rod
Plate and Sheet
Strip
Pipe and Tube
Wire
Welding
Powder Material
Cast Products
Forged Products
Fittings
Fastening
Round Bar:
φ2–500 mm, 1–6 m length
Flat/Square Bar:
4–100 mm thickness/width
Hex Bar:
A/F 3–100 mm
Hollow Bar:
OD 20–300 mm
Sheet:
0.3–6 mm thickness
Medium Plate:
6–25 mm thickness
Heavy Plate:
25–100 mm thickness
Standard Strip:
0.05–3 mm thick,
10–600 mm wide
Precision strip:
0.01–0.5 mm thick,
tight tolerance ±0.005 mm
Foil:
0.005–0.1 mm thick
Seamless Tube:
OD 6–450 mm,
WT 1–50 mm,
1–12 m length
Welded Tube:
OD 10–600 mm,
WT 1–20 mm
Capillary Tube:
OD 1–10 mm,
WT 0.1–2 mm
Wire Form:
Cold Drawn Wire,
Bright Wire,
Spring Wire,
Fine Wire,
Ultra-fine Wire
General Diameter:
φ0.1–10 mm
Coil Weight:
50–500 kg,
customizable tolerance
Solid Wire:
φ0.8–4.0 mm
Flux-cored Wire:
φ1.2–4.0 mm
Welding Rod:
φ2.0–5.0 mm
Powder Form:
AM 3D Printing Powder,
Spherical Powder,
Gas-atomized Powder,
Water-atomized Powder
Particle Size:
10–150 μm
Sphericity:
≥90% for AM grade
Cast Ingot:
φ200–800 mm
Precision Casting:
min wall 0.5 mm
Cast Pipe:
OD 100–600 mm,
WT 10–50 mm
Forged Bar:
Φ35–500 mm
Forged Ring:
OD 200–2000 mm
Forging Weight:
1–5000 kg
Fittings Form:
Elbow, Tee, Reducer, Flange, Cap, Outlet, Lap Joint
Size range:
1/2''–24'' (DN15–DN600)
Wall thickness:
Sch10–Sch160, STD, XS, XXS
Pressure Class:
150–2500 LB
Fastening Form:
Bolt, Nut, Screw, Stud, Washer, Pin, Rivet
Metric: M3–M64
Imperial: #4–2.5''
Length: 6–500 mm
Alloy HR-160 is a solid-solution-strengthened nickel-cobalt-chromium-silicon alloy with outstanding resistance to high-temperature corrosion. This datasheet presents the material within the American (ASTM / ASME / UNS) standard system.
A solid-solution-strengthened nickel-cobalt-chromium-silicon alloy, Alloy HR-160 offers outstanding resistance to many forms of high-temperature corrosion attack. It has excellent resistance to sulfidation and chloride attack in both reducing and oxidizing atmospheres, together with exceptionally good resistance to oxidation, hot corrosion, carburization, metal dusting, nitridation, and attack by low-melting-point compounds such as those formed by phosphorus and vanadium. Its high silicon content (about 2.75%) forms a protective silica-rich scale that underlies this resistance. The austenitic structure is very stable; long-term ageing at 650–870 °C produces only Cr₂₃C₆ carbides and a G-phase rather than embrittling sigma or mu phases. The alloy is especially suited to environments from combustion of low-grade fuels or processing of contaminated feedstocks, and is capable of withstanding temperatures up to 1204 °C (2200 °F). It is supplied in the solution-annealed condition.
Typical applications include waste-incineration equipment, low-grade-fuel and biomass combustion hardware, chemical-process components handling sulfur-, chlorine- and vanadium-bearing streams, and high-temperature heat-treatment and furnace parts.
| Property | Value | Unit |
|---|---|---|
| Density | 8.08 | g/cm³ |
| Melting range | 1300–1370 | °C |
| Elastic modulus | 207 | GPa |
| Coefficient of thermal expansion (20–100 °C) | 13.3 | µm/m·°C |
| Thermal conductivity (20 °C) | 9.6 | W/m·K |
| Specific heat (20 °C) | 461 | J/kg·K |
| Structure | Austenitic (FCC) | — |
| Element | Symbol | Min % | Max % | Role in Alloy |
|---|---|---|---|---|
| Nickel | Ni | Balance | — | Base element; matrix stability |
| Cobalt | Co | 27.0 | 33.0 | Solid-solution; carburisation resistance |
| Chromium | Cr | 26.0 | 30.0 | Oxidation / sulfidation resistance |
| Silicon | Si | 2.40 | 3.00 | Forms protective silica-rich scale |
| Iron | Fe | — | 3.5 | Residual |
| Titanium | Ti | — | 0.70 | Minor |
| Manganese | Mn | — | 1.00 | Deoxidiser |
| Aluminium | Al | — | 0.50 | Minor |
| Carbon | C | — | 0.10 | Carbide formation |
Solution-annealed condition, typical values for UNS N12160.
| Condition | Property | Value |
|---|---|---|
| Solution annealed | Tensile strength (UTS) | ≥745 MPa (108 ksi) |
| Solution annealed | 0.2% yield strength | ≥345 MPa (50 ksi) |
| Solution annealed | Elongation at break | ≥45 % |
| After ageing (650–870 °C) | Structure | Stable; no sigma / mu phases |
| — | Elastic modulus | 207 GPa |
Confirm against the mill test report. The stable austenitic structure resists embrittlement, forming only Cr₂₃C₆ and a G-phase rather than sigma or mu phases on long-term ageing.
| Environment | Performance | Notes |
|---|---|---|
| Sulfidation (reducing + oxidizing) | Outstanding | Silica-rich protective scale |
| Chloride / chlorine attack | Excellent | Reducing and oxidizing atmospheres |
| Carburisation / metal dusting | Excellent | High silicon + chromium |
| Oxidation / hot corrosion | Very Good | To about 1204 °C |
| Low-melting compounds (P, V) | Excellent | Resists ash / contaminant attack |
The high silicon content forms a protective silica-rich scale that gives outstanding resistance to sulfidation and chloride attack in both reducing and oxidizing atmospheres, together with excellent resistance to carburization, metal dusting, nitridation, hot corrosion, and attack by low-melting-point phosphorus- and vanadium-bearing compounds — making the alloy well suited to combustion of low-grade fuels and contaminated feedstocks.
A single-phase solid-solution alloy; not hardenable by precipitation. Properties are set by solution annealing.
Anneal Solution anneal at approximately 1175 °C (2150 °F) and rapidly cool (water or rapid air cool) to retain the best balance of properties. The alloy is not strengthened by heat treatment; all hot- or cold-worked parts should be annealed and rapidly cooled.
Good weldability with all common processes except submerged-arc welding (high heat input and slow cooling promote cracking). Welded by gas-tungsten-arc, gas-metal-arc and shielded-metal-arc with matching filler, on clean, solution-annealed material.
| Welding Process | Applicability | Filler / Consumable |
|---|---|---|
| GTAW / TIG | Good | Matching HR-160 filler |
| GMAW / MIG | Good | Matching filler |
| SMAW / stick | Good | Matching electrode |
Weld with matching filler and clean surfaces; submerged-arc welding is not recommended.
Machining Guidelines
| Parameter | Recommendation |
|---|---|
| Machinability | Difficult; work-hardens, rigid setups, sharp tooling |
| Speeds | Slow speeds, positive feeds, no dwelling |
| Coolant | Ample coolant |
Forming Processes
| Process | Notes |
|---|---|
| Cold forming | Good ductility; work-hardens, anneal between heavy operations |
| Hot forming | ~1175 °C; anneal and rapid-cool afterward |
| Industry | Typical Components | Key Requirements |
|---|---|---|
| Waste incineration | Furnace, grate and recuperator parts | Sulfidation + chloride resistance |
| Power (low-grade fuel) | Biomass / coal combustion hardware | Hot corrosion + sulfidation resistance |
| Chemical process | Sulfur / chlorine / vanadium streams | Multi-mode corrosion resistance |
| Heat treatment | Carburising / nitriding furnace parts | Carburisation + metal-dusting resistance |
| Product Form | ASTM Standard | ASME |
|---|---|---|
| Plate, sheet and strip | ASTM B435 | ASME CC2385 |
| Bar and forgings | ASTM B564 | ASME SB-564 |
| Seamless pipe and tube | ASTM B622 | ASME SB-622 |
| Wrought fittings | ASTM B366 | ASME SB-366 |
Nickel-cobalt-chromium-silicon solid-solution heat- and corrosion-resistant alloy. UNS N12160.
| Alloy | Cr % | Co % | Si % | Best Used For |
|---|---|---|---|---|
| Alloy HR-160 | 26–30 | 27–33 | 2.4–3.0 | Ni-Co-Cr-Si; outstanding sulfidation/chloride, low-grade fuel combustion |
| Alloy 556 | 21–23 | 16–21 | ≤0.4 | Fe-Ni-Cr-Co; sulfidation, chlorine, molten salts |
| Alloy HR-120 | 23–27 | ≤3 | ≤1.0 | High-strength Fe-Ni-Cr heat-resistant |
| Alloy 800H | 19–23 | — | ≤1.0 | General high-temperature creep service |
| Alloy 230 | 20–24 | ≤5 | 0.25–0.75 | High-temperature strength + oxidation |
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