Steel A607 Grade 50
ASTM A607 Grade 50
A607 Grade 50 is a columbium/vanadium micro-alloyed HSLA sheet and strip specification used widely in North America for cold-formed structural and automotive parts, supplied hot-rolled or cold-rolled in Class 1 and Class 2.
Reference datasheet — A607 Grade 50 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the HR-C1 condition
A607 Grade 50 tempers and conditions
A607 Grade 50 is supplied in 4 conditions, soft to hard. HR-C1 is the default FabDigit quotes; the values on this page are for it.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Hot Rolled, Class 2 | Pick when weldability and cold bending matter more than peak tensile; same 345 MPa yield with a 40 MPa lower tensile minimum and leaner carbon. | 375 | 460 | 25 | 143 HB | — |
HR-C1Default Hot Rolled, Class 1 | Standard stocked condition: hot-rolled coil/sheet with the higher minimum tensile of Class 1, for frames, brackets and heavy cold-formed sections. | 380 | 490 | 26 | 150 HB | — |
Cold Rolled, Class 2 | Best combination of surface finish, formability and weldability in this grade; chosen for deep-drawn or roll-formed structural stampings. | 380 | 470 | 24 | 148 HB | 10 % IACS |
Cold Rolled, Class 1 | Use where tighter thickness tolerance, flatness and a clean surface are needed for stamped automotive or appliance parts. | 390 | 500 | 23 | 155 HB | 9.5 % IACS |
What is A607 Grade 50?
A607 Grade 50 is a columbium/vanadium micro-alloyed HSLA sheet and strip specification used widely in North America for cold-formed structural and automotive parts, supplied hot-rolled or cold-rolled in Class 1 and Class 2. Default properties are 380 MPa yield, 490 MPa tensile, 26 % elongation and 150 HB (80 HRB), so it carries more load than mild steel at the same gauge while remaining easy to weld. It has no inherent corrosion resistance and needs larger bend radii and more springback compensation than 1008/1010 sheet. Choose A607 Grade 70 for higher strength, or A606 Type 4 where bare weathering exposure is required. A607 Grade 50 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,425°C (2,597 °F). A607 Grade 50 has a yield strength of 380 MPa (55.1 ksi) and a tensile strength of 490 MPa (71.1 ksi) — weaker than 68% of steel grades. Elongation at break is 26% and the elastic modulus is 205 GPa (29.7 Msi).
What is A607 Grade 50 used for?
- automotive chassis brackets
- cold-formed structural parts
- agricultural machinery
Advantages
- Ductile — tolerates forming and impact — 26%, better than 82% of steel grades
- Readily welded — 82/100, better than 81% of steel grades
- Forms and bends easily — 65/100, better than 81% of steel grades
- High electrical conductivity — 9.5 % IACS, better than 75% of steel grades
Limitations
- Hard to polish — 45/100, worse than 84% of steel grades
A607 Grade 50 properties
Typical room-temperature values for A607 Grade 50-HR-C1; bars are the position among steel grades.
Physical3
A607 Grade 50 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,425°C (2,597 °F).
Mechanical14
A607 Grade 50 has a yield strength of 380 MPa (55.1 ksi) and a tensile strength of 490 MPa (71.1 ksi) — weaker than 68% of steel grades. Elongation at break is 26% and the elastic modulus is 205 GPa (29.7 Msi).
Thermal6
A607 Grade 50 is rated for continuous service to 400°C (752 °F). It conducts heat at 45 W/m·K (26 BTU/hr·ft·°F), better than 66% of steel grades. Thermal expansion is 12 µm/m·K (6.67 µin/in·°F).
Electrical3
A607 Grade 50 conducts electricity at 9.5 % IACS, better than 75% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (14/100), better than 70% of steel grades.
Sustainability4
Producing a kilogram of A607 Grade 50 takes about 26 MJ of energy and emits 2.1 kg of CO₂ — less than 64% of steel grades. Typical recycled content is 30%.
Manufacturability7
A607 Grade 50's machinability is good (55/100, better than 62% of steel grades); weldability very good (82/100); formability good (65/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the steel family
Yield strength against density for every steel grade FabDigit runs. A607 Grade 50 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with A607 Grade 50
Is A607 Grade 50 easy to machine?
Machines like a 1020–1030 carbon steel at roughly 55–60% of AISI 1212; low sulphur means stringy chips, so use positive rake and chipbreakers.
Can A607 Grade 50 be welded?
Excellent for GMAW/RSW/laser with low carbon equivalent; use low-hydrogen ER70S-6 class filler and avoid excessive heat input to keep the fine-grain HAZ strength.
Can A607 Grade 50 be formed, bent or molded?
Cold forms well but needs larger bend radii than mild steel (about 1.5–2 t) and more springback compensation; bend transverse to rolling direction where possible.
A607 Grade 50 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 maximum; Class 2 typically leaner | ≤ 0.22 | 0.1 |
| Mn | ≤ 1.35 | 1 |
| P | ≤ 0.04 | 0.02 |
| Slower S usual for good formability | ≤ 0.05 | 0.01 |
| Sitypical mill practice, not always specified | ≤ 0.3 | 0.05 |
| Nbcolumbium and/or vanadium required as the micro-alloying addition | 0.01 – 0.05 | 0.03 |
| Valternative or supplement to Nb | 0.01 – 0.15 | 0.05 |
| Cuonly when copper-bearing steel is specified | ≥ 0.2 | 0.25 |
| Fe | balance |
What surface finishes work on A607 Grade 50?
No natural corrosion protection — phosphate + e-coat, powder coat, hot-dip or electro-galvanize; pickled-and-oiled coil is the usual as-supplied surface.
Surface treatments FabDigit runs on steel parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Organic Coating
Black / Phosphate
Thermal Spray
Equivalent designations
Standards and trade names that resolve to Steel A607 Grade 50 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- ASTM
- A607-50
How much does A607 Grade 50 cost?
A607 Grade 50 is a budget-cost steel ($), cheaper than about 90% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
A607 Grade 50 — frequently asked
What is A607 Grade 50 used for?
A607 Grade 50 is typically used for automotive chassis brackets, cold-formed structural parts and agricultural machinery. In short: workhorse 50 ksi HSLA sheet; weldable cold-forming grade; stronger than mild-steel sheet.
What is the yield strength of A607 Grade 50?
A607 Grade 50 has a typical yield strength of 380 MPa (55.1 ksi) and a tensile strength of 490 MPa (71.1 ksi) — weaker than 68% of steel grades. Strength varies by condition: see the 4 listed tempers.
Is A607 Grade 50 easy to machine?
Reasonably — machinability is rated good (55/100, better than 62% of steel grades). Machines like a 1020–1030 carbon steel at roughly 55–60% of AISI 1212; low sulphur means stringy chips, so use positive rake and chipbreakers.
Can A607 Grade 50 be welded?
Yes — weldability is rated very good (82/100). Excellent for GMAW/RSW/laser with low carbon equivalent; use low-hydrogen ER70S-6 class filler and avoid excessive heat input to keep the fine-grain HAZ strength.
What surface finishes work on A607 Grade 50?
No natural corrosion protection — phosphate + e-coat, powder coat, hot-dip or electro-galvanize; pickled-and-oiled coil is the usual as-supplied surface.
Can A607 Grade 50 be formed, bent or molded?
Cold forms well but needs larger bend radii than mild steel (about 1.5–2 t) and more springback compensation; bend transverse to rolling direction where possible.
What is the maximum service temperature of A607 Grade 50?
A607 Grade 50 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.
What is the difference between A607 Grade 50 HR-C1 and A607 Grade 50 CR-C1?
HR-C1 is the default condition — standard stocked condition: hot-rolled coil/sheet with the higher minimum tensile of Class 1, for frames, brackets and heavy cold-formed sections. CR-C1: use where tighter thickness tolerance, flatness and a clean surface are needed for stamped automotive or appliance parts. Yield strength is 380 MPa in HR-C1 versus 390 MPa in CR-C1.
How much does A607 Grade 50 cost?
A607 Grade 50 is a budget-cost steel ($), cheaper than about 90% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- ASTM A607 — Steel, Sheet and Strip, High-Strength, Low-Alloy, Columbium or Vanadium, or Both, Hot-Rolled and Cold-Rolled (withdrawn, superseded by A1011/A1018) — ASTM International (2004)
- ASTM A1011/A1011M — Hot-Rolled Sheet and Strip, HSLAS — ASTM International (2018)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys (HSLA steels) — ASM International (1990)
- ASM Handbook Vol.14 — Forming and Forging — ASM International (2006)
- worldsteel Life Cycle Inventory data for steel products — World Steel Association (2022)
- Mysteel / SMM (2025)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.