Steel A532 Class III Type A vs A536 65-45-12
Steel · grade comparison
Steel A532 Class III Type A and A536 65-45-12 are both steel grades. A532 Class III Type A is the stronger of the two: tensile strength 550 MPa (79.8 ksi) against 480 MPa (69.6 ksi) for A536 65-45-12, about 15% more. In exchange, A536 65-45-12 is the more ductile: elongation 14% versus 0% for A532 Class III Type A, and A532 Class III Type A is harder (680 HB vs 170 HB). A536 65-45-12 is lighter (7.1 g/cm³ vs 7.65 g/cm³ for A532 Class III Type A) and A532 Class III Type A is stiffer (210 GPa vs 169 GPa). On the shop floor, A536 65-45-12 machines more easily (good vs not recommended) and A536 65-45-12 welds better (fair vs not recommended).
A532 Class III Type AChoose it when strength drives the design, or when the part sees heat.
A536 65-45-12Choose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
A532 Class III Type A vs A536 65-45-12: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all steel grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all steel grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
A532 Class III Type AA536 65-45-12
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Shear Modulus
Bulk Modulus
Tensile Strength (Ultimate)
Elongation at Break
Compressive Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Yield Strength (0.2% offset)
Reduction in Area
Shear Strength
Hardness, Rockwell B
Same in both: Poisson's Ratio 0.28
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Liquidus Temperature
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Min Service Temperature
Same in both: Latent Heat of Fusion 220 J/g94.6 BTU/lb
Electrical
Conductivity and insulation.
Electrical Resistivity
Electrical Conductivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Galvanic Potential (seawater, vs SCE)
Corrosion Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Castability
Brazeability / Solderability
Same in both: Polishability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Thermal Diffusivity
Thermal Shock Resistance Index
Strength versus weight
Yield strength against density for every steel grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Manufacturing and finishing
| Capability | A532 Class III Type A | A536 65-45-12 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$ Standard | $$ Standard |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 9 finishes: Copper Plating, Electroless Nickel (EN), Epoxy Coating, Gold Plating, Hard Chrome Plating, Manganese Phosphate, Plasma Spray, Silver Plating, Zinc Phosphate.
A532 Class III Type A vs A536 65-45-12 — frequently asked
Is A532 Class III Type A stronger than A536 65-45-12?
Yes. A532 Class III Type A has a typical tensile strength of 550 MPa (79.8 ksi) against 480 MPa (69.6 ksi) for A536 65-45-12 — about 15% more.
Which is cheaper, A532 Class III Type A or A536 65-45-12?
Both sit in the same relative cost tier ($$, standard); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, A532 Class III Type A or A536 65-45-12?
A536 65-45-12. Its machinability rates good (68/100) against not recommended (2/100) for A532 Class III Type A; for welding the order is A536 65-45-12 first (fair, 35/100) then A532 Class III Type A (not recommended, 8/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in A532 Class III Type A and A536 65-45-12 side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.
Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.