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B.S. 420S45 Details
Steel strip intended for the manufacture of springs. Specification for martensitic and austenitic stainless steel
B.S. 420S45 Standard Download
420S45 Datasheet
B.S. 420S45| Category | Type | Grade | Designations |
|---|---|---|---|
| Grades | Stainless Steels | 420S45 | UK - B.S. , BS 1449-2 - Steel plate, sheet and strip. Specification for stainless and heat-resisting steel plate, sheet and strip BS 1554 - Specification for stainless and heat-resisting steel round wire BS 2056 - Specification for stainless steel wire for mechanical springs BS 5770-4 - Steel strip intended for the manufacture of springs. Specification for martensitic and austenitic stainless steel |
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.28 | 0.36 | ||
| Si | - | 1.00 | ||
| Mn | - | 1.00 | ||
| P | - | 0.04 | ||
| S | - | 0.03 | ||
| Cr | 12.00 | 14.00 | ||
| Mo | - | - | ||
| Ni | - | 1.00 |
| 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) |
|---|---|---|---|---|---|---|
| 389 (≥) | 436 (≥) | 13 | 21 | 22 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 223 |
| 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 |
|---|---|---|---|---|---|---|---|
| 717 (≥) | 664 (≥) | 12 | 42 | 11 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 141 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 788 | 558 | 985 |
| 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 |
|---|---|---|---|
| 420S45 | B.S. | UK | Steel strip intended for the manufacture of springs. Specification for martensitic and austenitic stainless steel |
| X45Cr13 | DIN | Germany | Corrosion-resistant high-temperature steel |
| 1.3541 | DIN | Germany | Corrosion-resistant high-temperature steel |