Aluminum 213.0
AA 213.0 · also CS74A
213.0 (CS74A) is an older Al-Cu-Si sand and permanent-mold casting alloy used as-cast in the F temper for general-purpose machinery castings.
Reference datasheet — 213.0 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 F condition
213.0 tempers and conditions
213.0 is supplied in 2 conditions, soft to hard. F is the default FabDigit quotes; the values on this page are for it.
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
FDefault As fabricated | Standard supply condition: no heat treatment, permanent-mold castings machined directly. | 105 | 165 | 1.5 | 70 HB | 28 % IACS |
F | Choose for larger or low-volume sand castings; slightly lower ductility and more scatter than permanent mold. | 110 | 165 | 1.5 | 70 HB | 28 % IACS |
What is 213.0?
213.0 (CS74A) is an older Al-Cu-Si sand and permanent-mold casting alloy used as-cast in the F temper for general-purpose machinery castings. It offers moderate strength — 105 MPa yield, 165 MPa tensile, HB 70 — with a machinability rating of 82, 120 W/m·K thermal conductivity and 175 °C service capability. Elongation is only 1.5%, so the alloy tolerates no plastic deformation; the wide freezing range makes it shrinkage and hot-tear prone, welding is not recommended for structure, and anodized appearance is poor because of the copper. Modern Al-Si-Cu casting alloys such as 319.0 are the practical substitute where availability is a concern. 213.0 has a density of 2.95 g/cm³ (0.107 lb/in³), heavier than 99% of aluminum grades. It melts at 545°C (1,013 °F). 213.0 has a yield strength of 105 MPa (15.2 ksi) and a tensile strength of 165 MPa (23.9 ksi) — weaker than 84% of aluminum grades. Elongation at break is 1.5% and the elastic modulus is 73 GPa (10.6 Msi).
What is 213.0 used for?
- general machinery castings
- housings
- hardware
Advantages
- Low embodied carbon — 9 kg CO₂/kg, better than 99% of aluminum grades
- Easy to machine — 82/100, better than 94% of aluminum grades
- High service temperature — 175°C (347 °F), better than 83% of aluminum grades
Limitations
- Needs corrosion protection — 32/100, worse than 94% of aluminum grades
- Limited ductility — 1.5%, worse than 91% of aluminum grades
- Hard to polish — 40/100, worse than 91% of aluminum grades
- Low strength — 105 MPa (15.2 ksi), worse than 84% of aluminum grades
- Low electrical conductivity — 28 % IACS, worse than 82% of aluminum grades
213.0 properties
Typical room-temperature values for 213.0-F; bars are the position among aluminum grades.
Physical3
213.0 has a density of 2.95 g/cm³ (0.107 lb/in³), heavier than 99% of aluminum grades. It melts at 545°C (1,013 °F).
Mechanical11
213.0 has a yield strength of 105 MPa (15.2 ksi) and a tensile strength of 165 MPa (23.9 ksi) — weaker than 84% of aluminum grades. Elongation at break is 1.5% and the elastic modulus is 73 GPa (10.6 Msi).
Thermal6
213.0 is rated for continuous service to 175°C (347 °F). It conducts heat at 120 W/m·K (69.3 BTU/hr·ft·°F), worse than 80% of aluminum grades. Thermal expansion is 22 µm/m·K (12.2 µin/in·°F).
Electrical3
213.0 conducts electricity at 28 % IACS, worse than 82% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is poor (32/100), worse than 94% of aluminum grades.
Sustainability4
Producing a kilogram of 213.0 takes about 145 MJ of energy and emits 9 kg of CO₂ — less than 99% of aluminum grades. Typical recycled content is 80%.
Manufacturability6
213.0's machinability is very good (82/100, better than 94% of aluminum grades); weldability poor (25/100).
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 aluminum family
Yield strength against density for every aluminum grade FabDigit runs. 213.0 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 213.0
Is 213.0 easy to machine?
Free machining with sharp carbide or PCD tools, high speed and light feed; the Cu/Zn content gives short chips and good finish with soluble-oil coolant.
Can 213.0 be welded?
Not recommended for structural welds — high Cu makes it hot-crack sensitive; repair with 4145/4043 filler only for cosmetic defects, or use mechanical joining.
Can 213.0 be formed, bent or molded?
Sand and permanent-mold casting only; needs generous risers and controlled solidification because of wide freezing range and shrinkage/hot-tear tendency; not heat treated in service (F temper).
213.0 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 |
|---|---|---|
| Si | 1 – 3 | 2 |
| Cu | 6 – 8 | 7 |
| Feimpurity limit | ≤ 1.2 | |
| Mn | ≤ 0.6 | |
| Mg | ≤ 0.1 | |
| Ni | ≤ 0.35 | |
| Zntolerated at high level in secondary metal | ≤ 2.5 | |
| Sn | ≤ 0.1 | |
| Others (total) | ≤ 0.5 | |
| Al | balance |
What surface finishes work on 213.0?
Do not rely on anodizing (dark, patchy film); use chromate/phosphate conversion plus primer and paint, or nickel/zinc-based plating over a suitable strike, for corrosion protection.
Surface treatments FabDigit runs on aluminum 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
Equivalent designations
Standards and trade names that resolve to Aluminum 213.0 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- Trade names
- CS74A
How much does 213.0 cost?
213.0 is a standard-cost aluminum ($$), cheaper than about 71% 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.
213.0 — frequently asked
What is 213.0 used for?
213.0 is typically used for general machinery castings, housings and hardware. In short: free-machining cast Al-Cu-Si; as-cast F temper only; low ductility, legacy grade.
What is the yield strength of 213.0?
213.0 has a typical yield strength of 105 MPa (15.2 ksi) and a tensile strength of 165 MPa (23.9 ksi) — weaker than 84% of aluminum grades. Strength varies by condition: see the 2 listed tempers.
Is 213.0 easy to machine?
Yes — machinability is rated very good (82/100, better than 94% of aluminum grades). Free machining with sharp carbide or PCD tools, high speed and light feed; the Cu/Zn content gives short chips and good finish with soluble-oil coolant.
Can 213.0 be welded?
Not readily — weldability is rated poor (25/100). Not recommended for structural welds — high Cu makes it hot-crack sensitive; repair with 4145/4043 filler only for cosmetic defects, or use mechanical joining.
What surface finishes work on 213.0?
Do not rely on anodizing (dark, patchy film); use chromate/phosphate conversion plus primer and paint, or nickel/zinc-based plating over a suitable strike, for corrosion protection.
Can 213.0 be formed, bent or molded?
Sand and permanent-mold casting only; needs generous risers and controlled solidification because of wide freezing range and shrinkage/hot-tear tendency; not heat treated in service (F temper).
What is the maximum service temperature of 213.0?
213.0 is rated for continuous use to about 175°C (347 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 213.0-F and 213.0 F-SAND?
F is the default condition — standard supply condition: no heat treatment, permanent-mold castings machined directly. F-SAND: choose for larger or low-volume sand castings; slightly lower ductility and more scatter than permanent mold. Yield strength is 105 MPa in F versus 110 MPa in F-SAND.
How much does 213.0 cost?
213.0 is a standard-cost aluminum ($$), cheaper than about 71% 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
- ANSI H35.1 / Aluminum Association Alloy and Temper Designations & Registration Records (Teal Sheets) — The Aluminum Association (2015)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys and Special-Purpose Materials (cast aluminum alloys) — ASM International (1990)
- ASM Specialty Handbook: Aluminum and Aluminum Alloys — ASM International (1993)
- ASTM B26/B26M (sand castings) and B108/B108M (permanent mold castings) — ASTM International (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.