不锈钢材料410性能数据.pdfVIP

TECHNICAL DATA BLUE SHEET Martensitic Stainless Steels Types 410, 420, 425 Mod, and 440A GENERAL PROPERTIES chromium carbide particles, and the greater the strength and hardness for heat treatable straight- Allegheny Ludlum Types 410, 420, 425 Modified, and chromium stainless steels. 440A (see composition on Page 2) are hardenable, straight-chromium stainless steels which combine superior wear resistance of high carbon alloys with the When blanking cutlery parts from annealed raw mate- excellent corrosion resistance of chromium stainless rial stock, Types 410, 420, and their higher carbon steels. Oil quenching these alloys from temperatures versions (Types 410HC and 420HC) will usually exhibit between 1800°F to 1950°F (982-1066°C) produces hardness, yield strength, and tensile strength that are the highest strength and/or wear resistance as well as low enough for fine blanking purposes. However, Type corrosion resistance. A range of as-quenched hardness 440A is not readily amenable to fine blanking due to its is achieved in these alloys by varying the carbon level higher strength and hardness in the annealed condition; from 0.15% maximum in Type 410 to 0.60-0.75% in and therefore, could require more powerful presses to Type 440A.