Alloy Information Report for Stainless Steel 442

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General Characteristics of Stainless 442

Ferritic and magnetic in all conditions, Stainless 442 is a high-chromium, heat-resistant steel offering better corrosion resistance than varieties with lower amounts of chromium. Difficult to fabricate, it’s ideal for high-heat applications.

Chemical Composition of Stainless 442

• Carbon 0.20 max
• Chromium 18.0-23.0
• Silicon 1.00 max
• Manganese 1.00 max
• Phosphorus 0.040 max
• Sulfur 0.030 max
• Iron balance

Heat Treatment of Stainless 442

• Anneal by heating to 1300°F (704°C), then air cool or water quench
• Thermal treatment won’t harden

Applications of Stainless 442

• Storage tanks for nitric acid
• Nitrogen fixation parts
• Zinc die casing machines
• Furnace and combustion components
• Decorative trim

Machinability of Stainless 442

• Lower work-hardening rate than iron-chromium-nickel varieties
• Rigid and powerful machines, deep cuts, slow feeds
• Carbide and high-speed steel tools appropriate
• Lubrication and thorough cooling are critical

Workability of Stainless 442

• Hot forge from 1600° to 2100°F (871° to 1149°C)
• Reheat below 1900°F (1038°C)
• Easily cold formed; preheating to 200° to 300°F (93° to 149°C) is beneficial

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