Steel 60Si2MnA · temper · default condition
Steel 60Si2MnA Annealed
Properties of the Annealed condition, compared with the other 60Si2MnA tempers.
Pick for machining, cold forming or blanking before the spring is hardened and tempered.
What is 60Si2MnA Annealed?
60Si2MnA Annealed is 60Si2MnA in the Annealed temper — pick for machining, cold forming or blanking before the spring is hardened and tempered. 60Si2MnA Annealed has a yield strength of 550 MPa (79.8 ksi) and a tensile strength of 900 MPa (131 ksi) — stronger than 71% of steel grades. Elongation at break is 14% and the elastic modulus is 206 GPa (29.9 Msi). 60Si2MnA Annealed has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,450°C (2,642 °F).
Limitations
- Limited service temperature — 200°C (392 °F), worse than 93% of steel grades
- Low electrical conductivity — 6 % IACS, worse than 79% of steel grades
- Difficult to weld — 25/100, worse than 77% of steel grades
- Limited ductility — 14%, worse than 75% of steel grades
60Si2MnA Annealed properties
Typical room-temperature values for 60Si2MnA Annealed — 12 properties are specific to this condition; the rest are grade-level values shared by every 60Si2MnA temper. Each bar shows where the value sits among the steel grades in FabDigit's library — further right is higher.
Physical3
60Si2MnA Annealed has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,450°C (2,642 °F).
Mechanical14
60Si2MnA Annealed has a yield strength of 550 MPa (79.8 ksi) and a tensile strength of 900 MPa (131 ksi) — stronger than 71% of steel grades. Elongation at break is 14% and the elastic modulus is 206 GPa (29.9 Msi).
Thermal6
60Si2MnA Annealed is rated for continuous service to 200°C (392 °F). It conducts heat at 37 W/m·K (21.4 BTU/hr·ft·°F), worse than 70% of steel grades. Thermal expansion is 11.9 µm/m·K (6.61 µin/in·°F).
Electrical3
60Si2MnA Annealed conducts electricity at 6 % IACS, worse than 79% of steel grades.
Chemical & Environmental2
Corrosion resistance is not recommended (12/100), worse than 53% of steel grades.
Sustainability4
Producing a kilogram of 60Si2MnA Annealed takes about 26 MJ of energy and emits 2 kg of CO₂ — less than 64% of steel grades. Typical recycled content is 30%.
Manufacturability7
60Si2MnA Annealed's machinability is fair (45/100, worse than 65% of steel grades); weldability poor (25/100); formability fair (45/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Other 60Si2MnA tempers and conditions
60Si2MnA is also supplied in 6 other conditions. The full side-by-side table is on the 60Si2MnA overview.
- AnnealedDefaultPick for machining, cold forming or blanking before the spring is hardened and tempered.550 MPa yield · 260 HB
- Q&TThe standard specification condition for 60Si2MnA springs; highest strength with acceptable ductility.1,500 MPa yield · 48 HRC
- Hardened & TemperedWorking condition of finished leaf/coil springs and spring strip, tempering chosen to hit a target hardness band.1,400 MPa yield · 47 HRC
Working with 60Si2MnA Annealed
Is 60Si2MnA easy to machine?
Machine in the annealed/spheroidized state with carbide tooling and rigid setups; at 45–50 HRC only grinding, EDM or hard turning with CBN is practical.
Can 60Si2MnA be welded?
Essentially not recommended for spring service — high C plus 1.8 % Si makes it crack-sensitive; if unavoidable use low-hydrogen consumables, 250–350 °C preheat and immediate re-hardening or PWHT.
Can 60Si2MnA be formed, bent or molded?
Cold form or blank only when annealed; leaf springs are best formed hot (900–1000 °C) or formed and then austenitized at 860–880 °C, oil quenched and tempered 400–520 °C, watching for surface decarburization and graphitization.
What surface finishes work on 60Si2MnA?
Shot peen springs before coating to recover fatigue life, then phosphate + paint, black oxide, or zinc/zinc-flake coat; no anodizing, and avoid hydrogen-charging acid pickling or electroplating without bake-out.
60Si2MnA chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| C | 0.56 – 0.64 | 0.6 |
| Si | 1.6 – 2 | 1.8 |
| Mn | 0.7 – 1 | 0.85 |
| Crresidual | ≤ 0.35 | — |
| Niresidual | ≤ 0.35 | — |
| Curesidual | ≤ 0.25 | — |
| PA grade (high-quality) limit | ≤ 0.03 | — |
| SA grade (high-quality) limit | ≤ 0.02 | — |
| Fe | balance | — |
60Si2MnA Annealed — frequently asked
What is 60Si2MnA Annealed used for?
60Si2MnA Annealed is typically used for leaf springs, industrial coil springs, spring washers, clamp and retaining rings, torsion bars and suspension and shock-absorber springs. In short: premium spring plate.
What is the yield strength of 60Si2MnA Annealed?
60Si2MnA Annealed has a typical yield strength of 550 MPa (79.8 ksi) and a tensile strength of 900 MPa (131 ksi) — stronger than 71% of steel grades. Strength varies by condition: see the 7 listed tempers.
Is 60Si2MnA Annealed easy to machine?
Reasonably — machinability is rated fair (45/100, worse than 65% of steel grades). Machine in the annealed/spheroidized state with carbide tooling and rigid setups; at 45–50 HRC only grinding, EDM or hard turning with CBN is practical.
Can 60Si2MnA Annealed be welded?
Not readily — weldability is rated poor (25/100). Essentially not recommended for spring service — high C plus 1.8 % Si makes it crack-sensitive; if unavoidable use low-hydrogen consumables, 250–350 °C preheat and immediate re-hardening or PWHT.
What surface finishes work on 60Si2MnA Annealed?
Shot peen springs before coating to recover fatigue life, then phosphate + paint, black oxide, or zinc/zinc-flake coat; no anodizing, and avoid hydrogen-charging acid pickling or electroplating without bake-out.
Can 60Si2MnA Annealed be formed, bent or molded?
Cold form or blank only when annealed; leaf springs are best formed hot (900–1000 °C) or formed and then austenitized at 860–880 °C, oil quenched and tempered 400–520 °C, watching for surface decarburization and graphitization.
What is the maximum service temperature of 60Si2MnA Annealed?
60Si2MnA Annealed is rated for continuous use to about 200°C (392 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Can FabDigit make parts in 60Si2MnA Annealed?
Yes — 60Si2MnA Annealed is available for CNC machining and sheet metal with instant online pricing. Upload a STEP file to get a price and a DFM check.
Sources
- GB/T 1222 (2016)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels, and High-Performance Alloys (AISI 9260) — ASM International (1990)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.