USA SAE A 581/A 581M (2009), A 581 S18235 Specialsteel Free-Machining Stainless Steel Wire and Wire Rods and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Type | Standard | Country | Application | 
|---|---|---|---|---|---|---|
| Steel Grades | Specialsteel | A 581 S18235 | Ferrite | SAE | USA | Free-Machining Stainless Steel Wire and Wire Rods | 
| C | Mn | Si | P | S | Cr | Ni | Mo | Ti | N | 
|---|---|---|---|---|---|---|---|---|---|
| ≤0.025 | ≤0.50 | ≤1.00 | ≤0.03 | 0.15 -0.35 | 17.50 -18.50 | ≤1.00 | 2.00 -2.50 | 0.30 -1.00 | ≤0.025 | 
| Yield Rp0.2 (MPa)  | 
                                            Tensile Rm (MPa)  | 
                                            Impact KV/Ku (J)  | 
                                            Elongation A (%)  | 
                                            Reduction in cross section on fracture Z (%)  | 
                                            As-Heat-Treated Condition | Brinell hardness (HBW) | 
|---|---|---|---|---|---|---|
| 453 (≥) | 363 (≥) | 24 | 43 | 34 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 333 | 
| Temperature (°C)  | 
                                        Modulus of elasticity (GPa)  | 
                                        Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and | Thermal conductivity (W/m·°C)  | 
                                        Specific thermal capacity (J/kg·°C)  | 
                                        Specific electrical resistivity (Ω mm²/m)  | 
                                        Density (kg/dm³)  | 
                                        Poisson’s coefficient, ν | 
|---|---|---|---|---|---|---|---|
| 24 | - | - | 0.32 | - | |||
| 676 | 693 | - | 42.3 | 343 | - | ||
| 745 | - | 44 | 32.2 | 132 | 313 | 
Heat treated : 1923°C - 1732°C
| A 581/A 581M (2009) | Free-Machining Stainless Steel Wire and Wire Rods | A-581-A-581M-(2009).pdf | 
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