Steel A715 Grade 60 HR-PO
Finish state
ASTM A715 Grade 60
Choose when scale-free surface is needed for direct painting, tight-radius forming or clean welding; mechanical properties essentially unchanged.
Values for the HR-PO condition
Other A715 Grade 60 tempers and conditions
A715 Grade 60 is listed in 3 conditions; see the grade overview at A715 Grade 60.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
HRDefault Hot rolled | Standard stocked condition: as-rolled hot band for roll-formed and press-braked structural parts that will be shot-blasted or painted. | 450 | 520 | 26 | 155 HB | 9.5 % IACS |
HR-POThis page hot-rolled, pickled and oiled | Choose when scale-free surface is needed for direct painting, tight-radius forming or clean welding; mechanical properties essentially unchanged. | 450 | 520 | 27 | 155 HB | 9.5 % IACS |
hot-rolled, temper-rolled / skin-passed and levelled | Use where flatness and freedom from coil set/stretcher strain matter for laser cutting and automated blanking; slightly higher yield, marginally lower elongation. | 465 | 525 | 24 | 161 HB | 9.5 % IACS |
What is A715 Grade 60 HR-PO?
A715 Grade 60 HR-PO is A715 Grade 60 supplied in the HR-PO condition — choose when scale-free surface is needed for direct painting, tight-radius forming or clean welding; mechanical properties essentially unchanged. A715 Grade 60 HR-PO has a yield strength of 450 MPa (65.3 ksi) and a tensile strength of 520 MPa (75.4 ksi) — stronger than 52% of steel grades. Elongation at break is 27% and the elastic modulus is 205 GPa (29.7 Msi). A715 Grade 60 HR-PO has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,500°C (2,732 °F). HR is the default condition FabDigit quotes; HR-PO is available on request or by drawing note.
Advantages
- Forms and bends easily — 75/100, better than 90% of steel grades
- Ductile — tolerates forming and impact — 27%, better than 86% of steel grades
- Readily welded — 85/100, better than 83% of steel grades
- High electrical conductivity — 9.5 % IACS, better than 75% of steel grades
A715 Grade 60 HR-PO properties
Typical room-temperature values for A715 Grade 60 HR-PO; 23 are specific to this condition. Other listed values are A715 Grade 60 reference data and may not represent this condition. Bars are the position among steel grades.
Physical3
A715 Grade 60 HR-PO has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,500°C (2,732 °F).
Mechanical16
A715 Grade 60 HR-PO has a yield strength of 450 MPa (65.3 ksi) and a tensile strength of 520 MPa (75.4 ksi) — stronger than 52% of steel grades. Elongation at break is 27% and the elastic modulus is 205 GPa (29.7 Msi).
Thermal6
A715 Grade 60 HR-PO is rated for continuous service to 350°C (662 °F). It conducts heat at 46 W/m·K (26.6 BTU/hr·ft·°F), better than 71% of steel grades. Thermal expansion is 12 µm/m·K (6.67 µin/in·°F).
Electrical3
A715 Grade 60 HR-PO conducts electricity at 9.5 % IACS, better than 75% of steel grades.
Chemical & Environmental3
Corrosion resistance is poor (16/100), better than 79% of steel grades.
Sustainability4
Producing a kilogram of A715 Grade 60 HR-PO takes about 25 MJ of energy and emits 2 kg of CO₂ — less than 82% of steel grades. Typical recycled content is 25%.
Manufacturability7
A715 Grade 60 HR-PO's machinability is good (55/100, better than 62% of steel grades); weldability excellent (85/100); formability very good (75/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with A715 Grade 60 HR-PO
Is A715 Grade 60 easy to machine?
Machines like a low-carbon steel but the very low sulphur and Ca-treated inclusions make chips gummy — use sharp coated carbide, positive rake and generous feed; drilling/punching of thin gauge is straightforward.
Can A715 Grade 60 be welded?
Excellent — low carbon equivalent allows GMAW/RSW/laser welding without preheat in typical gauges; match with 70-ksi-class consumables and limit heat input to avoid HAZ softening.
Can A715 Grade 60 be formed, bent or molded?
Designed for cold roll forming, press braking and stretch flanging; allow larger bend radii (≈1.5–2 t) and 2–3× the springback of mild steel, and bend transverse to rolling where possible.
What surface finishes work on A715 Grade 60?
Not anodizable; shot-blast or pickle to remove scale, then phosphate + e-coat, powder coat, or specify the hot-dip galvanized (A653 HSLAS-F 60) equivalent for exterior service.
A715 Grade 60 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 |
|---|---|---|
| Cheat analysis max; low C for formability and weldability | ≤ 0.15 | 0.08 |
| Mn | ≤ 1.65 | 1.2 |
| P | ≤ 0.03 | 0.01 |
| Svery low S with inclusion shape control | ≤ 0.01 | 0 |
| Si | ≤ 0.9 | 0.25 |
| Alkilled steel, grain refinement | 0.01 – 0.1 | 0.04 |
| Nbmicro-alloy; Nb and/or V and/or Ti per producer type | ≤ 0.1 | 0.03 |
| Vmicro-alloy option | ≤ 0.15 | 0.05 |
| Timicro-alloy / S-fixing option | ≤ 0.15 | 0.02 |
| Nwith V for precipitation strengthening | ≤ 0.02 | 0.01 |
| Cu0.20 min only when copper-bearing steel is specified | ≥ 0.2 | 0.25 |
| CaCa (or Zr / rare earth) for sulfide shape control — the basis of 'improved formability' | ≤ 0.01 | 0 |
| Fe | balance | — |
A715 Grade 60 HR-PO — frequently asked
What is A715 Grade 60 HR-PO used for?
A715 Grade 60 HR-PO is typically used for auto structural stampings, wheel components and frame rails. In short: most formable HSLA sheet; strength with stretch-flange ductility; weldable without preheat.
What is the yield strength of A715 Grade 60 HR-PO?
A715 Grade 60 HR-PO has a typical yield strength of 450 MPa (65.3 ksi) and a tensile strength of 520 MPa (75.4 ksi) — stronger than 52% of steel grades. Strength varies by condition: see the 3 listed tempers.
Is A715 Grade 60 HR-PO easy to machine?
Reasonably — machinability is rated good (55/100, better than 62% of steel grades). Machines like a low-carbon steel but the very low sulphur and Ca-treated inclusions make chips gummy — use sharp coated carbide, positive rake and generous feed; drilling/punching of thin gauge is straightforward.
Can A715 Grade 60 HR-PO be welded?
Yes — weldability is rated excellent (85/100). Excellent — low carbon equivalent allows GMAW/RSW/laser welding without preheat in typical gauges; match with 70-ksi-class consumables and limit heat input to avoid HAZ softening.
What surface finishes work on A715 Grade 60 HR-PO?
Not anodizable; shot-blast or pickle to remove scale, then phosphate + e-coat, powder coat, or specify the hot-dip galvanized (A653 HSLAS-F 60) equivalent for exterior service.
Can A715 Grade 60 HR-PO be formed, bent or molded?
Designed for cold roll forming, press braking and stretch flanging; allow larger bend radii (≈1.5–2 t) and 2–3× the springback of mild steel, and bend transverse to rolling where possible.
What is the maximum service temperature of A715 Grade 60 HR-PO?
A715 Grade 60 HR-PO is rated for continuous use to about 350°C (662 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between A715 Grade 60-HR and A715 Grade 60 HR-TL?
HR is the default condition — standard stocked condition: as-rolled hot band for roll-formed and press-braked structural parts that will be shot-blasted or painted. HR-TL: use where flatness and freedom from coil set/stretcher strain matter for laser cutting and automated blanking; slightly higher yield, marginally lower elongation. Yield strength is 450 MPa in HR versus 465 MPa in HR-TL.
Sources
- ASTM A715 — Steel Sheet and Strip, Hot-Rolled, HSLA with Improved Formability (withdrawn) — ASTM International (1999)
- ASTM A1011/A1011M — Hot-Rolled Sheet and Strip, HSLAS-F — ASTM International (2018)
- ASTM A653/A653M — Zinc-Coated (Galvanized) Sheet, HSLAS-F — ASTM International (2020)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels and High-Performance Alloys (HSLA steels) — ASM International (1990)
- ASM Handbook Vol.19 — Fatigue and Fracture — ASM International (1996)
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.