AISI 410 Stainless Steel Properties, SS410 Heat Treatment, Magnetic

AISI 410 stainless steel properties, SS410 heat treatment, magnetic
 

AISI 410 Stainless Steel, SS410 (UNS S41000)

AISI 410 stainless steel is one of the most commonly used martensitic stainless steels. It contains about 12% Cr, so it has moderate corrosion resistance. Unlike austenite such as AISI 304 and AISI 316, martensite such as 410 is magnetic and can be hardened by heat treatment like carbon steel and low alloy steel. SS410 has good mechanical properties such as tensile strength, creep strength and fatigue strength, and is mainly used in steam turbines, jet engines and gas turbines.

The Type 420 is basically a high-carbon version of the SS410, providing higher strength. Ferritic stainless steel 430 contains a high chromium content and therefore has a high corrosion resistance.

Mechanical property

Mechanical properties of AISI 410 stainless steel are given in the data table below, including tensile strength, yield strength, elongation, area reduction, Brinell and Rockwell hardness, Charpy impact tests, etc.

410 grade stainless steel heat treatment

Class 410 stainless steel heat treatment includes annealing, hardening, tempering and stress relief.

anneal

Annealing temperature of forged 410 stainless steel:

Process (subcritical) annealing: Air cooling from temperature 650-760 °C (1200-1400 °F). Maximum softness is obtained by heating the temperature to the upper end of this range. Rockwell hardness: 86-92 HRB.

Full annealing: thorough soaking at temperatures in the range of 830-885°C (1525-1625°F); Cool the furnace to 790 °C (1455 °F) and continue cooling to 595 °C (1100 °F) at a rate of 15-25 °C/h (27-45 °F/h); The air cools to room temperature. Rockwell hardness: 75-85 HRB.

Isothermal annealing: heating to 830-885 °C (1525-1625 °F); Maintain at 705 °C (1300 °F) for 6 hours. Rockwell hardness: 85 HRB.

indurate

Heat to austenitizing temperature 925-1010°C (1700-1850°F), the usual time for this temperature range is 30-90 minutes, the quenching agent is air or oil (for parts thicker than 6.4 mm (0.25 in), oil should be quenched; A horse tempering bath of 150-400 °C (300-750 °F) can be used instead of oil quenching.) ;

Tempering temperature: 205-370°C (400-700°F), final tensile strength is 1105-1515 MPa (160-220 ksi), Rockwell hardness is 38-47 HRC.

Tempering temperature: 565-605°C (1050-1125°F), final tensile strength is 760-965 MPa (110-140 ksi), Rockwell hardness is 25-31 HRC. (Tempering in the temperature range of 370-565 °C (700-1050 °F) is not recommended, as this results in low and unstable impact performance, poor resistance to corrosion and stress corrosion.)