Steel 60CrMo3-3 +A (Annealed)
Heat-treated state
EN 60CrMo3-3
Pick for bar/wire that must be machined, cold-formed or coiled before hardening; lowest hardness delivery condition.
Values for the +A condition
Other 60CrMo3-3 tempers and conditions
60CrMo3-3 is listed in 6 conditions; see the grade overview at 60CrMo3-3.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Spheroidize annealed | Choose for cold heading, deep drawing or heavy cold forming of this high-carbon grade before final hardening. | 410 | 690 | 20 | 205 HB | — |
Treated for improved shearability | Order when bar or coil must be cold sheared/cropped into blanks without cracking; hardness capped for clean cut faces. | 420 | 700 | 18 | 16 HRC | 8.5 % IACS |
+AThis page Annealed | Pick for bar/wire that must be machined, cold-formed or coiled before hardening; lowest hardness delivery condition. | 450 | 750 | 16 | 230 HB | — |
Supplied with specified hardenability band | Order code for guaranteed Jominy hardenability scatter band on thick sections; mechanical properties as delivered are those of the accompanying soft condition. | 450 | 760 | 15 | 58 HRC | 8.2 % IACS |
Restricted (core) hardenability band, narrow Jominy scatter | Tighter hardenability window than +H for parts where core hardness after quenching of heavy sections must be reproducible batch to batch. | 450 | 760 | 15 | 57 HRC | 8 % IACS |
+QTDefault Quenched and tempered | Standard service condition for springs, torsion bars and highly stressed elastic parts; austenitize ~850 °C, oil quench, temper 400–500 °C to 45–50 HRC. | 1,550 | 1,750 | 7 | 48 HRC | — |
What is 60CrMo3-3 +A?
60CrMo3-3 +A is 60CrMo3-3 heat treated to +A — pick for bar/wire that must be machined, cold-formed or coiled before hardening; lowest hardness delivery condition. 60CrMo3-3 +A has a yield strength of 450 MPa (65.3 ksi) and a tensile strength of 750 MPa (109 ksi) — stronger than 52% of steel grades. Elongation at break is 16% and the elastic modulus is 206 GPa (29.9 Msi). 60CrMo3-3 +A has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,420°C (2,588 °F). +QT is the default condition FabDigit quotes; +A is available on request or by drawing note.
Advantages
- Polishes to a fine finish — 65/100, better than 78% of steel grades
Limitations
- Low fracture toughness — 45 MPa·√m (41 ksi·√in), worse than 90% of steel grades
- Difficult to weld — 25/100, worse than 77% of steel grades
60CrMo3-3 +A properties
Typical room-temperature values for 60CrMo3-3 +A; 14 are specific to this condition. Other listed values are 60CrMo3-3 reference data and may not represent this condition. Bars are the position among steel grades.
Physical3
60CrMo3-3 +A has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,420°C (2,588 °F).
Mechanical16
60CrMo3-3 +A has a yield strength of 450 MPa (65.3 ksi) and a tensile strength of 750 MPa (109 ksi) — stronger than 52% of steel grades. Elongation at break is 16% and the elastic modulus is 206 GPa (29.9 Msi).
Thermal6
60CrMo3-3 +A is rated for continuous service to 400°C (752 °F). It conducts heat at 42 W/m·K (24.3 BTU/hr·ft·°F), worse than 56% of steel grades. Thermal expansion is 11.8 µm/m·K (6.56 µin/in·°F).
Electrical3
60CrMo3-3 +A conducts electricity at 7.5 % IACS, worse than 67% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (12/100), worse than 53% of steel grades.
Sustainability4
Producing a kilogram of 60CrMo3-3 +A takes about 28 MJ of energy and emits 2.1 kg of CO₂ — less than 56% of steel grades. Typical recycled content is 30%.
Manufacturability8
60CrMo3-3 +A's machinability is fair (50/100, worse than 53% of steel grades); weldability poor (25/100); formability fair (40/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 60CrMo3-3 +A
Is 60CrMo3-3 easy to machine?
Machine in the +A/+AC condition (≈50–60 % of AISI 1212); after Q&T to 48 HRC use carbide or CBN, rigid setups and grinding for finishing.
Can 60CrMo3-3 be welded?
Essentially non-weldable for structural use (C ≈ 0.60, CE > 0.9); if unavoidable, preheat 300–350 °C, low-hydrogen consumables and immediate post-weld temper.
Can 60CrMo3-3 be formed, bent or molded?
Cold coil/bend only in spheroidized or +S condition with generous radii; hot form 900–1050 °C and heat treat afterwards — austenitize ~850 °C, oil quench, temper 400–500 °C.
What surface finishes work on 60CrMo3-3?
Shot peen springs for fatigue life, then phosphate + oil, zinc-rich or epoxy/powder coat; avoid acid pickling and un-baked electroplating due to hydrogen embrittlement risk.
60CrMo3-3 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 |
|---|---|---|
| Chigh carbon for spring elastic limit | 0.56 – 0.64 | 0.6 |
| Si | 0.15 – 0.4 | 0.28 |
| Mn | 0.7 – 1 | 0.85 |
| P | ≤ 0.03 | — |
| S | ≤ 0.03 | — |
| Cr | 0.7 – 1 | 0.85 |
| MoMo level distinguishes the -1/-2/-3/-4 variants of 60CrMo3; verify against the current EN 10089 table for the exact suffix | 0.25 – 0.35 | 0.3 |
| Fe | balance | — |
60CrMo3-3 +A — frequently asked
What is 60CrMo3-3 +A used for?
60CrMo3-3 +A is typically used for springs, torsion bars, stabilizer bars and high-load elastic elements. In short: high-strength spring steel; 48 HRC after tempering; effectively non-weldable.
What is the yield strength of 60CrMo3-3 +A?
60CrMo3-3 +A has a typical yield strength of 450 MPa (65.3 ksi) and a tensile strength of 750 MPa (109 ksi) — stronger than 52% of steel grades. Strength varies by condition: see the 6 listed tempers.
Is 60CrMo3-3 +A easy to machine?
Reasonably — machinability is rated fair (50/100, worse than 53% of steel grades). Machine in the +A/+AC condition (≈50–60 % of AISI 1212); after Q&T to 48 HRC use carbide or CBN, rigid setups and grinding for finishing.
Can 60CrMo3-3 +A be welded?
Not readily — weldability is rated poor (25/100). Essentially non-weldable for structural use (C ≈ 0.60, CE > 0.9); if unavoidable, preheat 300–350 °C, low-hydrogen consumables and immediate post-weld temper.
What surface finishes work on 60CrMo3-3 +A?
Shot peen springs for fatigue life, then phosphate + oil, zinc-rich or epoxy/powder coat; avoid acid pickling and un-baked electroplating due to hydrogen embrittlement risk.
Can 60CrMo3-3 +A be formed, bent or molded?
Cold coil/bend only in spheroidized or +S condition with generous radii; hot form 900–1050 °C and heat treat afterwards — austenitize ~850 °C, oil quench, temper 400–500 °C.
What is the maximum service temperature of 60CrMo3-3 +A?
60CrMo3-3 +A is rated for continuous use to about 400°C (752 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- EN 10089 — Hot-rolled steels for quenched and tempered springs — CEN (2002)
- EN 10083-1/-3 — Steels for quenching and tempering (delivery conditions +A, +AC, +S, +H, +QT) — CEN (2006)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- EN 13906-1 — Cylindrical helical springs, design and calculation — CEN (2013)
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.