SUS321 STEEL INTRODUCTION

SUS321 type is a Ni-Cr-Ti austenitic stainless steel with good wear resistance, high temperature resistance, creep resistance, etc.

SUS321 is a titanium-stabilized austenitic stainless steel. The addition of titanium improves the intergranular corrosion performance. It has good corrosion resistance in the atmosphere and in different organic and inorganic acids, especially in oxidizing media. This steel also has good high temperature mechanical properties.

Metal chemical composition requirements in SUS321 standard

⑴Carbon C: ≤0.08,

⑵Silicon Si: ≤1.00,

⑶Manganese Mn: ≤2.00,

⑷Phosphorus P: ≤0.045,

⑸Sulfur S: ≤0.030,

⑹Chromium Cr: 17.00～19.00,

⑺Nickel: 9.00～12.00,

⑻Other elements: Ti≥5C~0.70.

SUS321 physical properties:

①Density Density (20℃)kg/dm3: "8.03,

②Melting point/℃:1398~1427,

③Specific heat capacity (0~100℃)/kg/(kg.k):0.5",

④Thermal conductivity/w/(m.k)100℃-:"16.3"

⑸Thermal conductivity/w/(m.k)500℃-:"22.2",

⑥Linear expansion coefficient/(10-6/k)0~100℃: "16.6",

⑦Linear expansion coefficient/(10-6/k)0~546℃: "18.6",

⑧Resistivity (20℃)/(Ω.mm2/m): "0.72",

⑨Longitudinal elastic modulus (20℃)/GPa: "193,

⑩Magnetic: None.

⑵Tensile strength (RM/MPa): 520,

⑶Extension strength (Rp0.2/MPa): 205,

⑷Elongation A/%: 40,

⑸ Area shrinkage (Z/%): 50.