Steel 08Al
GB 08Al · EN DC05
08Al is an aluminium-killed low-carbon deep-drawing sheet steel, equivalent to DC05 and SPCE, supplied cold rolled (annealed, skin-passed or full hard), hot rolled and pickled, or hot-dip and electro-galvanized.
Reference datasheet — 08Al 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 CR-A condition
08Al tempers and conditions
08Al is supplied in 5 conditions, soft to hard. CR-A is the default FabDigit quotes; the values on this page are for it.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
CR-ADefault CR Annealed | Standard stocked condition for stamped body panels and deep-drawn parts; lowest yield, highest r-value. | 150 | 300 | 42 | 88 HB | — |
CR Skin-Passed / Temper Rolled | Choose when flat, stretcher-strain-free surface and tight thickness/surface roughness are required for exposed panels. | 170 | 310 | 40 | 95 HB | 12 % IACS |
Normalized | Rare condition used for thicker 08Al plate/forging stock to refine grain and homogenize properties. | 200 | 330 | 36 | 100 HB | 12 % IACS |
Hot rolled | Thicker gauges (>2 mm) where surface finish is unimportant and cost dominates. | 220 | 340 | 35 | 105 HB | 12 % IACS |
Full Hard | Cheap high-strength substrate for further processing (galvanizing line, re-annealing) or flat, non-formed parts. | 500 | 560 | 3 | 170 HB | — |
Supply forms, finishes and certifications
Ways 08Al is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
HRP | Hot Rolled Pickled & Oiled | Surface finish |
EG | Electrogalvanized | Coating |
GI | Hot-dip galvanized | Coating |
What is 08Al?
08Al is an aluminium-killed low-carbon deep-drawing sheet steel, equivalent to DC05 and SPCE, supplied cold rolled (annealed, skin-passed or full hard), hot rolled and pickled, or hot-dip and electro-galvanized. Its 150 MPa yield, 300 MPa tensile, 42 % elongation and r-bar of about 1.8-2.2 make it a first choice for complex drawn panels in automotive and appliance stamping (formability score 97). Corrosion resistance is essentially nil (score 10) so coating is mandatory, machinability is poor (55), and stock should be used within a few months to limit strain ageing. 08Al has a density of 7.87 g/cm³ (0.284 lb/in³), heavier than 92% of steel grades. It melts at 1,495°C (2,723 °F). 08Al has a yield strength of 150 MPa (21.8 ksi) and a tensile strength of 300 MPa (43.5 ksi) — weaker than 100% of steel grades. Elongation at break is 42% and the elastic modulus is 207 GPa (30 Msi).
What is 08Al used for?
- automotive body panels
- deep-drawn stampings
- appliance shells
Advantages
- Ductile — tolerates forming and impact — 42%, better than 100% of steel grades
- Conducts heat well — 60 W/m·K (34.7 BTU/hr·ft·°F), better than 100% of steel grades
- Forms and bends easily — 97/100, better than 100% of steel grades
- High electrical conductivity — 12 % IACS, better than 99% of steel grades
- Readily welded — 95/100, better than 97% of steel grades
Limitations
- Low strength — 150 MPa (21.8 ksi), worse than 100% of steel grades
08Al properties
Typical room-temperature values for 08Al-CR-A; bars are the position among steel grades.
Physical3
08Al has a density of 7.87 g/cm³ (0.284 lb/in³), heavier than 92% of steel grades. It melts at 1,495°C (2,723 °F).
Mechanical14
08Al has a yield strength of 150 MPa (21.8 ksi) and a tensile strength of 300 MPa (43.5 ksi) — weaker than 100% of steel grades. Elongation at break is 42% and the elastic modulus is 207 GPa (30 Msi).
Thermal6
08Al is rated for continuous service to 350°C (662 °F). It conducts heat at 60 W/m·K (34.7 BTU/hr·ft·°F), better than 100% of steel grades. Thermal expansion is 12 µm/m·K (6.67 µin/in·°F).
Electrical3
08Al conducts electricity at 12 % IACS, better than 99% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (10/100), worse than 86% of steel grades.
Sustainability4
Producing a kilogram of 08Al takes about 25 MJ of energy and emits 2.1 kg of CO₂ — less than 82% of steel grades. Typical recycled content is 20%.
Manufacturability7
08Al's machinability is good (55/100, better than 62% of steel grades); weldability excellent (95/100); formability excellent (97/100).
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. 08Al is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 08Al
Is 08Al easy to machine?
Very soft and gummy — use sharp positive-rake tools, high speed and good chip control; deburring after blanking is the usual issue rather than tool wear.
Can 08Al be welded?
Excellent: carbon equivalent well below 0.2, ideal for resistance spot, MAG, laser and projection welding with no preheat (reduce current/adjust electrodes on galvanized variants).
Can 08Al be formed, bent or molded?
Designed for deep drawing — high r̄ (≈1.8–2.2) and n (≈0.22); use draw oil, keep blank holder low, and stamp within ~3–6 months of production to avoid strain-ageing Lüders bands.
08Al 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≤0.08 % typical for deep-drawing 08Al; older GB 710 allowed 0.05–0.11 % | ≤ 0.08 | 0.05 |
| Sikept low (Al-killed, not Si-killed) | ≤ 0.03 | 0.02 |
| Mn | 0.2 – 0.45 | 0.32 |
| P | ≤ 0.03 | 0.02 |
| S | ≤ 0.03 | 0.01 |
| Alacid-soluble Als ≥0.015 % — the defining deoxidizer | 0.02 – 0.07 | 0.04 |
| Ncontrolled to limit strain ageing | ≤ 0.01 | 0 |
| Fe | balance |
What surface finishes work on 08Al?
No anodizing; standard routes are zinc phosphate + e-coat/paint, hot-dip or electro galvanizing, or oil for temporary protection — bare surfaces flash-rust quickly.
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 08Al in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
How much does 08Al cost?
08Al 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.
08Al — frequently asked
What is 08Al used for?
08Al is typically used for automotive body panels, deep-drawn stampings and appliance shells. In short: deep-drawing benchmark sheet; highest formability, low strength; excellent spot weldability.
What is the yield strength of 08Al?
08Al has a typical yield strength of 150 MPa (21.8 ksi) and a tensile strength of 300 MPa (43.5 ksi) — weaker than 100% of steel grades. Strength varies by condition: see the 5 listed tempers.
Is 08Al easy to machine?
Reasonably — machinability is rated good (55/100, better than 62% of steel grades). Very soft and gummy — use sharp positive-rake tools, high speed and good chip control; deburring after blanking is the usual issue rather than tool wear.
Can 08Al be welded?
Yes — weldability is rated excellent (95/100). Excellent: carbon equivalent well below 0.2, ideal for resistance spot, MAG, laser and projection welding with no preheat (reduce current/adjust electrodes on galvanized variants).
What surface finishes work on 08Al?
No anodizing; standard routes are zinc phosphate + e-coat/paint, hot-dip or electro galvanizing, or oil for temporary protection — bare surfaces flash-rust quickly.
Can 08Al be formed, bent or molded?
Designed for deep drawing — high r̄ (≈1.8–2.2) and n (≈0.22); use draw oil, keep blank holder low, and stamp within ~3–6 months of production to avoid strain-ageing Lüders bands.
What is the maximum service temperature of 08Al?
08Al 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 08Al CR-A and 08Al CR-FH?
CR-A is the default condition — standard stocked condition for stamped body panels and deep-drawn parts; lowest yield, highest r-value. CR-FH: cheap high-strength substrate for further processing (galvanizing line, re-annealing) or flat, non-formed parts. Yield strength is 150 MPa in CR-A versus 500 MPa in CR-FH.
How much does 08Al cost?
08Al 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
- EN 10130 Cold rolled low carbon steel flat products (DC01–DC06) — CEN (2006)
- JIS G 3141 Cold-reduced carbon steel sheets and strip (SPCE/SPCEN) — JISC (2021)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels — ASM International (1990)
- Baosteel cold-rolled deep-drawing steel coil datasheet (2022)
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.