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Wuxi Nickel Alloy New Material Technology Co., Ltd
1 Years
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| Brand Name : | NikTech |
| Model Number : | Incoloy 825 |
| Certification : | ISO 9001:2008 |
| Price : | Negotiatable |
| Payment Terms : | L/C,T/T,Western Union,MoneyGram |
| Supply Ability : | 300 Ton per Month |
| Delivery Time : | 2-30days |
Incoloy 825 Coils are solid-solution-strengthened nickel-iron-chromium-molybdenum-copper-titanium alloys formulated to excel where both high-temperature stability and corrosion resistance are essential. Their optimized chemistry—38–46 % Ni, 21–28 % Fe, 19.5–23.5 % Cr, 2.5–3.5 % Mo, 1.5–3 % Cu, 0.6–1.2 % Ti, and 0.2–0.8 % Al—provides tensile strengths ≥ 760 MPa and elongation ≥ 30 % after annealing, without relying on precipitation hardening. These coils maintain mechanical integrity from cryogenic temperatures up to 816 °C in continuous service and up to 982 °C intermittently, exhibiting outstanding resistance to oxidation, carburization, and chloride-stress-corrosion cracking in both oxidizing and reducing atmospheres. Their high Cr and Al contents form protective chromia/alumina scales, while Cu and Ti guard against pitting and crevice attacks in sulfuric, phosphoric, and hydrochloric acid environments. Excellent formability (stamping, slitting, fine-blanking) and weldability (TIG/GTAW, electron-beam) allow fabrication of diaphragms, bellows, springs, and heat-exchanger fins with minimal post-weld treatment. Coils are supplied in thicknesses from 0.1 mm to 5 mm and widths up to 1.2 m, per ASTM B424/ASME SB-424, ASTM B425/ASME SB-425, AMS 5599, and NACE MR0175 requirements.
| Element | Content (%) |
|---|---|
| Nickel (Ni) | 38.0 – 46.0 |
| Iron (Fe) | 21.0 – 28.0 |
| Chromium (Cr) | 19.5 – 23.5 |
| Molybdenum (Mo) | 2.50 – 3.50 |
| Copper (Cu) | 1.50 – 3.00 |
| Titanium (Ti) | 0.60 – 1.20 |
| Aluminum (Al) | 0.20 – 0.80 |
| Manganese (Mn) | ≤ 1.00 |
| Silicon (Si) | ≤ 0.50 |
| Carbon (C) | ≤ 0.050 |
| Sulfur (S) | ≤ 0.030 |
| Property | Annealed Strip (Min.) |
|---|---|
| Ultimate Tensile Strength | ≥ 760 MPa (110 ksi) |
| Yield Strength (0.2 % offset) | ≥ 310 MPa (45 ksi) |
| Elongation (4D) | ≥ 30 % |
| Hardness (Rockwell B) | ≤ 95 HRB |
| Property | Value |
|---|---|
| Density | 8.14 g/cm³ |
| Melting Range | 1385 – 1400 °C |
| Thermal Conductivity (25 °C) | 11.1 W/m·K |
| Specific Heat Capacity (25 °C) | 440 J/kg·K |
| Coefficient of Thermal Expansion | 13.9 µm/m·°C (20–100 °C) |
| Electrical Resistivity (20 °C) | 0.096 µΩ·m |
ASTM B424 / ASME SB-424 — Plate, sheet & strip form
ASTM B425 / ASME SB-425 — Strip & foil form
AMS 5599 — Special-quality strip/sheet
ISO 15156-3 / NACE MR0175 — Sour-service environments
Chemical Processing: Scrubber panels, evaporator tubing, reactor liners in sulfuric and phosphoric acid service
Oil & Gas: Well-piping jackets, offshore platform coils, acid gas sweetening vessels
Marine: Seawater condenser fins, pollution-control equipment, desalination coils
Power Generation: Gas-turbine transition ducts, combustion-chamber liners, heat-exchanger panels
Nuclear: Fuel reprocessing trays, radioactive-waste handling panels
Q1: Why select Incoloy 825 Coils for acidic environments?
Their high Mo and Cu content enhances resistance to reducing acids
(sulfuric, phosphoric), while Cr and Ni protect against oxidizing
media and chloride stress-corrosion cracking.
Q2: What temperature range can Incoloy 825 Coils handle?
Continuous service up to 816 °C (1500 °F), intermittent exposures
to 982 °C (1800 °F), with stable mechanical and corrosion
performance across this range.
Q3: Are Incoloy 825 Coils weldable and formable?
Yes—TIG/GTAW and electron-beam welding produce sound joints;
excellent ductility (elongation ≥ 30 %) allows stamping, slitting,
and fine-blanking with minimal springback.
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