Standard Specification for Free-Machining Stainless Steel Bars
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| Category | Type | Grade | Microstructure | Designations |
|---|---|---|---|---|
| Grades | Stainless Steels | A 582 S18235 | Ferrite | USA - SAE , A 582/A 582M (2012) | |
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.025 | ||
| Mn | - | 0.50 | ||
| Si | - | 1.00 | ||
| P | - | 0.03 | ||
| S | 0.15 | 0.35 | ||
| Cr | 17.50 | 18.50 | ||
| Ni | - | 1.00 | ||
| Mo | 2.00 | 2.50 | ||
| Ti | 0.30 | 1.00 | ||
| N | - | 0.025 |
| 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) |
|---|---|---|---|---|---|---|
| 356 (≥) | 496 (≥) | 41 | 41 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 111 |
| 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 |
|---|---|---|---|---|---|---|---|
| 857 (≥) | 976 (≥) | 22 | 32 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 114 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 976 | 738 | 258 |
| 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 |
|---|---|---|---|
| A 581 S18235 | SAE | USA | Free-Machining Stainless Steel Wire and Wire Rods |
| A 582 S18235 | SAE | USA | Standard Specification for Free-Machining Stainless Steel Bars |
| A 959 S18235 | SAE | USA | Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels |
| S18235 | AISI | USA | Ferritic Chromium Stainless Steel |