Steel A27 Grade 60-30 vs A27 Grade 70-36
Steel · grade comparison
Steel A27 Grade 60-30 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 260 MPa (37.7 ksi) for A27 Grade 60-30, about 12% more; tensile strength follows at 515 MPa (74.7 ksi) vs 485 MPa (70.3 ksi). A27 Grade 70-36 is harder — 150 HB against 131 HB for A27 Grade 60-30 — which matters for wear surfaces and threads. On the shop floor, A27 Grade 60-30 welds better (excellent vs very good) and A27 Grade 60-30 sits in a lower cost tier (budget, $) than A27 Grade 70-36 (standard, $$).
A27 Grade 60-30Choose it when it will be welded, or when cost is the deciding factor.
A27 Grade 70-36Choose it when strength drives the design, or when surface hardness matters.
A27 Grade 60-30 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.
A27 Grade 60-30A27 Grade 70-36
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
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: Shear Modulus 78 GPa11.3 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29
Physical
Density and transition temperatures.
Liquidus Temperature
Same in both: Density 7.85 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,425°C2,597 °F
Thermal
How each material carries heat and how hot it can run.
Min Service Temperature
Same in both: Thermal Conductivity 50 W/m·K28.9 BTU/hr·ft·°F · Specific Heat Capacity 480 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 11.9 µm/m·K6.6 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Max Service Temperature (continuous) 425°C797 °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
Formability (cold)
Castability
Brazeability / Solderability
Polishability
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)
Modulus of Resilience
Thermal Shock Resistance Index
Same in both: Thermal Diffusivity 13.3 mm²/s
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 | A27 Grade 60-30 | A27 Grade 70-36 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $ Budget | $$ 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.
A27 Grade 60-30 vs A27 Grade 70-36 — frequently asked
Is A27 Grade 70-36 stronger than A27 Grade 60-30?
Yes. A27 Grade 70-36 has a typical yield strength of 290 MPa (42.1 ksi) against 260 MPa (37.7 ksi) for A27 Grade 60-30 — about 12% more. Tensile strength is 515 MPa (74.7 ksi) vs 485 MPa (70.3 ksi).
Which is cheaper, A27 Grade 60-30 or A27 Grade 70-36?
A27 Grade 60-30 is the lower-cost material: it sits in the budget tier ($) while A27 Grade 70-36 is standard ($$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.
Which welds better, A27 Grade 60-30 or A27 Grade 70-36?
A27 Grade 60-30. Its weldability rates excellent (88/100) against very good (78/100) for A27 Grade 70-36.
Ready to make it?
Upload a CAD file and FabDigit prices the part in A27 Grade 60-30 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.