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| Category | Type | Steel grade | Standard | Country |
|---|---|---|---|---|
| Grades | Special Alloy | STS321 | KS | Korea |
Chemical composition%of the ladle analysis of gradeSTS321
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Ni(％) | Ti(%) |
|---|---|---|---|---|---|---|---|
| Max 0.08 | Max 1.00 | Max 2.00 | Max 0.04 | Max 0.03 | 17.O-19.O | 9.OO-13.O | 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) |
|---|---|---|---|---|---|---|
| 266(≥) | 222(≥) | 31 | 22 | 31 | Solution and Aging,Annealing,Ausaging,Q+T,etc | 313 |
| 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 |
|---|---|---|---|---|---|---|---|
| 242(≥) | 216(≥) | 42 | 24 | 42 | Solution and Aging,Annealing,Ausaging,Q+T,etc | 144 | |
| Temp. °C/°F | Creep strain limit (10000h) (Rp1,0)N/mm2 | Creep rupture strength (10000h) (Rp1,0)N/mm2 | |||||
| 178 | 357 | 195 |
| 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 |