SUS321 steel, tensile strength of 520 or higher, the conditions to yield strength of 205 or higher.
Chinese name
SUS321
Tensile strength
Sigma b (MPa) : p. 520
Conditions to yield strength
Sigma (0.2 MPa) : p. 205
elongation
Delta (%) : 40 or higher
SUS321
Low characteristics and scope of application:
Add Ti improve intergranular corrosion resistance, is not recommended as a decorative parts.
Low corrosion resistance:
SUS321 and SUS347 SUS348 is respectively in titanium, niobium and tantalum and niobium, stabilization of stainless steel, suitable for high temperature use welded components. 348 is a stainless steel is suitable for the nuclear power industry, for tantalum and has a certain limit the amount of drilling.
Low chemical composition:
Carbon C: 0.08 or less
Si Si: 1.00 or less
Manganese Mn: 2.00 or less
S: sulfur 0.030 or less
P P: 0.035 or less chromium Cr: 17.00 ~ 19.00
Ni Ni: 9.00 ~ 12.00
Ti Ti: p 5 x % C
Low mechanical properties:
Reduction of area bits (%) : 50 or more
Hardness: 187 hb or less; 90 HRB or less; 200 hv or less
Low heat treatment specification and metallographic organization:
Solid solution heat treatment specification: 1) 920 ~ 1150 ℃ cold quickly; 2) stabilization processing according to buyer's request and heat treatment temperature of 850 ~ 850 ℃, but it must be noted in the contract.
Metallographic organization: organizational characteristics of austenite in shape.
Low delivery status: general with heat treatment state delivery, its heat treatment type specified in the contract; Not specified, the heat treatment state delivery.