KS STS321 Enquiry | Print this page
| Category | Type | Steel grade | Standard | Country |
|---|---|---|---|---|
| Grades | Special Alloy | STS321 | KS | Korea |
Chemical composition % of the ladle analysis of grade STS321
| 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) |
|---|---|---|---|---|---|---|
| 172 (≥) | 218 (≥) | 14 | 11 | 41 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 312 |
| 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 |
|---|---|---|---|---|---|---|---|
| 852 (≥) | 825 (≥) | 34 | 22 | 31 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 422 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 556 | 317 | 296 |
| 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 |