Steel A216 WCA vs A27 Grade 70-36
Steel · grade comparison
Steel A216 WCA and A27 Grade 70-36 are both steel grades. A27 Grade 70-36 is the stronger of the two: yield strength 290 MPa (42.1 ksi) against 255 MPa (37 ksi) for A216 WCA, about 14% more; tensile strength follows at 515 MPa (74.7 ksi) vs 455 MPa (66 ksi). In exchange, A216 WCA is the more ductile: elongation 31% versus 26% for A27 Grade 70-36, and A27 Grade 70-36 is harder (150 HB vs 130 HB). On the shop floor, A216 WCA machines more easily (68 vs 55 out of 100).
A216 WCAChoose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
A27 Grade 70-36Choose it when strength drives the design.
A216 WCA vs A27 Grade 70-36: 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.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 200 GPa29 Msi · Shear Modulus 78 GPa11.3 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29
Physical
Density and transition temperatures.
Density
Liquidus Temperature
Same in both: Melting Point (Solidus) 1,425°C2,597 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Same in both: Max Service Temperature (continuous) 425°C797 °F · Min Service Temperature -29°C-20 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 10 % IACS · Electrical Resistivity 1.7×10⁻⁷ Ω·m6.69 µΩ·in
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
Castability
Brazeability / Solderability
Polishability
Same in both: Formability (cold) 20 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Water
Same in both: Embodied Energy (primary production) 26 MJ/kg11,178 BTU/lb · Embodied Carbon (primary production) 2.1 kg CO₂/kg · Typical Recycled Content 85%
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Modulus of Resilience
Thermal Diffusivity
Thermal Shock Resistance Index
Same in both: Specific Stiffness (E / density) 25.5 MN·m/kg
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 | A216 WCA | A27 Grade 70-36 |
|---|---|---|
| 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.
A216 WCA vs A27 Grade 70-36 — frequently asked
Is A27 Grade 70-36 stronger than A216 WCA?
Yes. A27 Grade 70-36 has a typical yield strength of 290 MPa (42.1 ksi) against 255 MPa (37 ksi) for A216 WCA — about 14% more. Tensile strength is 515 MPa (74.7 ksi) vs 455 MPa (66 ksi).
Which is cheaper, A216 WCA or A27 Grade 70-36?
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, A216 WCA or A27 Grade 70-36?
A216 WCA, by a small margin. Both rate good for machinability — 68/100 against 55/100 for A27 Grade 70-36; for welding the order is A216 WCA first (excellent, 85/100) then A27 Grade 70-36 (very good, 78/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in A216 WCA and A27 Grade 70-36 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.