Steel 60Si2MnA Hot Rolled
Finish state
GB 60Si2MnA · EN 60Si2Mn A
Cheapest mill condition for leaf-spring blanks and forging stock that will be austenitized afterwards.
Values for the Hot Rolled condition
Other 60Si2MnA tempers and conditions
60Si2MnA is listed in 5 conditions; see the grade overview at 60Si2MnA.
- Annealed
- Hot Rolled
- Normalized
- Cold Drawn
- Q&T
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
AnnealedDefault spheroidize/soft annealed bar, rod or strip | Pick for machining, cold forming or blanking before the spring is hardened and tempered. | 550 | 900 | 14 | 260 HB | — |
Hot RolledThis page as-rolled bar, flat or plate | Cheapest mill condition for leaf-spring blanks and forging stock that will be austenitized afterwards. | 620 | 1,000 | 11 | 30 HRC | 6 % IACS |
air cooled from ~870 °C | Used to refine and homogenize forged or hot-rolled structure before final hardening. | 650 | 1,050 | 10 | 31 HRC | 6 % IACS |
cold drawn bar / hard-drawn wire | Choose for close-tolerance bar and for wire that will be coiled then stress-relieved rather than fully hardened. | 950 | 1,150 | 7 | 35 HRC | 6 % IACS |
Quenched and tempered | The standard specification condition for 60Si2MnA springs; highest strength with acceptable ductility. | 1,500 | 1,700 | 7 | 48 HRC | — |
What is 60Si2MnA Hot Rolled?
60Si2MnA Hot Rolled is 60Si2MnA supplied in the Hot Rolled condition — cheapest mill condition for leaf-spring blanks and forging stock that will be austenitized afterwards. 60Si2MnA Hot Rolled has a yield strength of 620 MPa (89.9 ksi) and a tensile strength of 1,000 MPa (145 ksi) — stronger than 78% of steel grades. Elongation at break is 11% and the elastic modulus is 206 GPa (29.9 Msi). 60Si2MnA Hot Rolled 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). Annealed is the default condition FabDigit quotes; Hot Rolled is available on request or by drawing note.
Advantages
- High strength — 620 MPa (89.9 ksi), better than 78% of steel grades
Limitations
- Limited service temperature — 200°C (392 °F), worse than 93% of steel grades
- Limited ductility — 11%, worse than 89% of steel grades
- Difficult to machine — 38/100, worse than 80% of steel grades
- Low electrical conductivity — 6 % IACS, worse than 78% of steel grades
- Difficult to weld — 25/100, worse than 77% of steel grades
60Si2MnA Hot Rolled properties
Typical room-temperature values for 60Si2MnA Hot Rolled; 22 are specific to this condition. Other listed values are 60Si2MnA reference data and may not represent this condition. Bars are the position among steel grades.
Physical3
60Si2MnA Hot Rolled 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 Hot Rolled has a yield strength of 620 MPa (89.9 ksi) and a tensile strength of 1,000 MPa (145 ksi) — stronger than 78% of steel grades. Elongation at break is 11% and the elastic modulus is 206 GPa (29.9 Msi).
Thermal6
60Si2MnA Hot Rolled 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 71% of steel grades. Thermal expansion is 11.9 µm/m·K (6.61 µin/in·°F).
Electrical3
60Si2MnA Hot Rolled conducts electricity at 6 % IACS, worse than 78% of steel grades.
Chemical & Environmental2
Corrosion resistance is not recommended (12/100), worse than 53% of steel grades.
Sustainability4
Producing a kilogram of 60Si2MnA Hot Rolled 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 Hot Rolled's machinability is fair (38/100, worse than 80% of steel grades); weldability poor (25/100); formability fair (35/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 60Si2MnA Hot Rolled
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 Hot Rolled — frequently asked
What is 60Si2MnA Hot Rolled used for?
60Si2MnA Hot Rolled 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 Hot Rolled?
60Si2MnA Hot Rolled has a typical yield strength of 620 MPa (89.9 ksi) and a tensile strength of 1,000 MPa (145 ksi) — stronger than 78% of steel grades. Strength varies by condition: see the 5 listed tempers.
Is 60Si2MnA Hot Rolled easy to machine?
Not especially — machinability is rated fair (38/100, worse than 80% 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 Hot Rolled 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 Hot Rolled?
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 Hot Rolled 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 Hot Rolled?
60Si2MnA Hot Rolled 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 Hot Rolled?
Yes — 60Si2MnA Hot Rolled is available for CNC machining and sheet metal; every part is priced by an engineer rather than instantly. 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.