Hastelloy C4 nickel-chromium-molybdenum alloy

Hastelloy C4 is a nickel-chromium-molybdenum alloy which has improved thermal stability. In this alloy, the tungsten was totally omitted and the iron content was reduced to approximately 1%. The alloy also contains approximately 0.3% Ti
Outstanding high-temperature stability exhibits good ductility and corrosion resistance after long-time aging at 650 to 1040 degree C . Resists formation of grain-boundary precipitates in weld heat-affected zones, and is suitable for most chemical process applications in the as-welded condition. Has excellent resistance to stress-corrosion cracking and to oxidizing atmospheres up to 1040 degree C
Hastelloy C4 alloy steel has exceptional resistance to a variety of chemical process environments, including hot contaminated mineral acids, solvents, chlorine, and chlorine-contaminated media (organic and inorganic, dry chlorine, formic and acetic acids, acetic anhydride, seawater, and brine).
Hastelloy C4 Nickel alloy similar material is : UNS N06445, W.NR.2.4610
Hastelloy C4 Nickel alloy application :
HastelloyC4 alloy is widely used in the field of energy production and pollution control, chemical, petrochemical, especially in the sulfuric acid, hydrochloric acid, phosphoric acid, acetic acid industry.

Hastelloy C4 nickel-chromium-molybdenum alloy
Hastelloy C4 Nickel base alloy chemical composition :

Ni Cr Mo Fe Ti Co C Mn Si P S
Min Balance 14.5 14
Max 17.5 17 3.0 0.7 2.0 0.009 1.0 0.05 0.025 0.010

Hastelloy C4 Nickel base alloy Mechanical Property:

Grade Density Melting point
Hastelloy C4 8.6g/cm3 1335°C-1380°C

Hastelloy C4 Nickel base alloy Mechanical Property :

Alloy state Tensile strength MPa Yield strength MPa elongation A5 %
Hastelloy C4 alloy bar 690 275 40
Hastelloy C4 alloy Hot rolled plate 690 275 40
Hastelloy C4 alloy colled rolled sheet 690 275 40
Hastelloy C4 alloy strip 690 275 40

Hastelloy C4 Product form and Specifications:

Product ASTM ASME
Alloy Sheet/Plate/Strip/Coil B575 SB575
Seamless alloy tube/Pipe B622 SB622
Welded alloy tube/pipe B619/B622 SB619/SB622
Ring/Bar/Rod B574 SB574
Forged product B564 SB564
Fittings/Flange B336 SB336

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