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KS STS321TF Details
KS STS321TF Standard Download
Category | Type | Grade | Microstructure | Designations |
---|---|---|---|---|
Grades | Stainless Steels | STS321TF | Austenite | Korea - KS , D 3587 (1991) - Steel tubes for fired heater |
Elements | Min.(≥) | Max.(≤) | Similar | Remarks |
---|---|---|---|---|
C | - | 0.08 | ||
Si | - | 1.00 | ||
Mn | - | 2.00 | ||
P | - | 0.045 | ||
S | - | 0.030 | ||
Cr | 17.00 | 19.00 | ||
Ni | 9.00 | 13.00 | ||
Mo | - | - | ||
N | - | - | ||
Ti | 5×C% | - |
Proof strength Rp0.2 (MPa) |
Tensile strength Rm (MPa) |
Impact energy KV (J) |
Elongation at fracture A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
---|---|---|---|---|---|---|
617 (≥) | 691 (≥) | 23 | 24 | 22 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 114 |
Property | Density kg/dm3 |
Temperature T °C/F |
Specific heat J / kgK |
Thermal conductivity W/mK |
Electric resistance µΩ·cm |
Modulus of elasticity kN/mm2 |
Expansion rate |
---|---|---|---|---|---|---|---|
386 (≥) | 655 (≥) | 24 | 44 | 33 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 342 | |
Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
244 | 462 | 326 |
Product type | Products | Dimension | Processes | Deliver Status |
---|---|---|---|---|
Plates / Sheets | Plates / Sheets | 0.08-200mm(T)*W*L | Forging, hot rolling and cold rolling | Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting |
Steel Bar | Round Bar, Flat Bar, Square Bar | Φ8-1200mm*L | Forging, hot rolling and cold rolling, Cast | Black, Rough Turning, Shot Blasting, |
Coil / Strip | Steel Coil /Steel Strip | 0.03-16.0x1200mm | Cold-Rolled & Hot-Rolled | Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting |
Pipes / Tubes | Seamless Pipes/Tubes, Welded Pipes/Tubes | OD:6-219mm x WT:0.5-20.0mm | Hot extrusion, Cold Drawn, Welded | Annealed, Solution and Aging, Q+T, ACID-WASHED |
Grade | Standard | Country | Application |
---|---|---|---|
STS321 | KS | Korea | Special alloys steel for chemical plant |
STS321TKA | KS | Korea | Stainless steel pipes for machine and structural purposes |
STS321HTB | KS | Korea | Stainless steel for boiler and heat exchanger tubes |
STS321HTF | KS | Korea | Steel tubes for fired heater |
STS321TB | KS | Korea | Stainless steel for boiler and heat exchanger tubes |
STS321TF | KS | Korea | Steel tubes for fired heater |
STS321TPY | KS | Korea | Large diameter welded stainless steel pipes |
STS321FB | KS | Korea | Stainless steel blooms and billets for forgings |
STS321HFB | KS | Korea | Stainless steel blooms and billets for forgings |
STS321HTP | KS | Korea | Stainless lined steel pipe |
STS321TP | KS | Korea | Stainless lined steel pipe |