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KS STS420J2 Details
KS STS420J2 Standard Download
| Category | Type | Grade | Microstructure | Designations |
|---|---|---|---|---|
| Grades | Stainless Steels | STS420J2 | Martensite | Korea - KS , D 3692 (2001) - Cold finished stainless steel bars D 3698 (2008) - Cold rolled stainless steel plates, sheets and strip D 3702 (2008) - Stainless steel wire rods D 3703 (2007) - Stainless steel wires D 3705 (2008) - Hot rolled stainless steel plates, sheets and strip D 3706 (2008) - Stainless steel bars D 3534 (2002) - Cold rolled stainless steel strip for springs |
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.26 | 0.40 | ||
| Si | - | 1.00 | ||
| Mn | - | 1.00 | ||
| P | - | 0.040 | ||
| S | - | 0.030 | ||
| Cr | 12.00 | 14.00 | ||
| Ni | - | 0.60 | ||
| Mo | - | - | ||
| N | - | - |
| 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) |
|---|---|---|---|---|---|---|
| 648 (≥) | 133 (≥) | 12 | 23 | 22 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 241 |
| 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 |
|---|---|---|---|---|---|---|---|
| 813 (≥) | 237 (≥) | 22 | 14 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 444 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 238 | 316 | 627 |
| 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 |
|---|---|---|---|
| STS420J2 | KS | Korea | Stainless steel bars |
| STS420J2TKA | KS | Korea | Stainless steel pipes for machine and structural purposes |
| STS420J2FB | KS | Korea | Stainless steel blooms and billets for forgings |