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Typical Tensile Properties of 9% Nickel Steel

Tensile tests were conducted on several 9% nickel steel specimens, which are manufactured in accordance with ASTM A353 or ASTM A553 Type I respectively. Typical tensile properties including tensile strength, yield strength, elongation, and reduction in area are presented in below table. The testing temperatures were ranging from room temperature (24°C) to cryogenic temperature (-269°C).

Tensile Properties of ASTM A353 9%-Ni Steel Plate

Test TemperatureTensile StrengthYield StrengthElongationReduction in Area
°C°FMPaksiMPaksi%%
247578011368098.62870
-151-24010301498501231761
-196-32011901729501382558
-253-423143020813201921843
-269-452159023114302082159
*Heat treatment for the specimens – double normalized and tempered: held at 900°C [1650°F] 1 hour for each 25 mm of thickness, air cooled; 790°C (1450 °F) 1 hour for each 25 mm of thickness, air cooled; held at 570 °C (1050 °F) for 1 hour for each 25 mm of thickness, water quenched.

Tensile Properties of ASTM A553 Type I Plate

Test TemperatureTensile StrengthYield StrengthElongationReduction in Area
°C°FMPaksiMPaksi%%
24757701126951012769
-151-2409951448851281842
-196-32011501679601392738
*Heat treatment for the specimens – quenched and tempered:  800 °C (1475 °F), water quenched; 570 °C (1050 °F) for 0.5 hour for each 25 mm of thickness, and subsequently water quenched.

The tabulated values in the two tables certify that tensile and yield strengths of 9% nickel alloy steel increase as temperature is decreased. The steel maintains excellent ductility at extremely low temperatures.

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