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Steel A216 WCA vs GP240GH

Steel · grade comparison

Steel A216 WCA and GP240GH are both steel grades. GP240GH is the stronger of the two: yield strength 270 MPa (39.2 ksi) against 255 MPa (37 ksi) for A216 WCA, about 6% more; tensile strength follows at 490 MPa (71.1 ksi) vs 455 MPa (66 ksi). In exchange, A216 WCA is the more ductile: elongation 31% versus 25% for GP240GH, and GP240GH is harder (145 HB vs 130 HB).

A216 WCAChoose it when the part is bent, formed or impact-loaded.

GP240GHChoose it when strength drives the design.

A216 WCA vs GP240GH: properties

A216 WCAGP240GH

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

200 GPa29 Msi
210 GPa30.5 Msi

Shear Modulus

78 GPa11.3 Msi
81 GPa11.7 Msi

Bulk Modulus

160 GPa23.2 Msi
165 GPa23.9 Msi

Tensile Strength (Ultimate)

455 MPa66 ksi
490 MPa71.1 ksi

Yield Strength (0.2% offset)

255 MPa37 ksi
270 MPa39.2 ksi

Elongation at Break

31%
25%

Reduction in Area

50%
42%

Compressive Strength

255 MPa37 ksi
265 MPa38.4 ksi

Shear Strength

285 MPa41.3 ksi
300 MPa43.5 ksi

Fatigue Strength (Endurance Limit)

200 MPa29 ksi
210 MPa30.5 ksi

Fracture Toughness (K_IC)

90 MPa·√m81.9 ksi·√in
85 MPa·√m77.4 ksi·√in

Hardness, Brinell

130 HB
145 HB

Hardness, Rockwell B

72 HRB
78 HRB

Hardness, Vickers

—
152 HV

Same in both: Poisson's Ratio 0.29 · Charpy V-Notch Impact (RT) 48 J35.4 ft·lbf

Physical

Density and transition temperatures.

Density

7.83 g/cm³0.28 lb/in³
7.85 g/cm³0.28 lb/in³

Liquidus Temperature

1,510°C2,750 °F
1,505°C2,741 °F

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

51 W/m·K29.5 BTU/hr·ft·°F
50 W/m·K28.9 BTU/hr·ft·°F

Specific Heat Capacity

470 J/kg·K0.11 BTU/lb·°F
460 J/kg·K0.11 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

11.7 µm/m·K6.5 µin/in·°F
12 µm/m·K6.7 µin/in·°F

Latent Heat of Fusion

247 J/g106 BTU/lb
250 J/g107 BTU/lb

Min Service Temperature

-29°C-20 °F
-20°C-4 °F

Same in both: 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)

-0.65 V
-0.6 V

Corrosion Resistance

10 / 100
12 / 100

Manufacturability

FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.

Machinability

68 / 100
60 / 100

Castability

72 / 100
80 / 100

Polishability

40 / 100
50 / 100

Same in both: Machinability Rating (AISI 1212 = 100 %) 70% · Weldability 85 / 100 · Formability (cold) 20 / 100 · Brazeability / Solderability 55 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

26 MJ/kg11,178 BTU/lb
24 MJ/kg10,318 BTU/lb

Embodied Carbon (primary production)

2.1 kg CO₂/kg
1.9 kg CO₂/kg

Typical Recycled Content

85%
75%

Same in both: Embodied Water 45 L/kg5.4 gal/lb

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

58 kN·m/kg
62 kN·m/kg

Specific Stiffness (E / density)

25.5 MN·m/kg
26.8 MN·m/kg

Modulus of Resilience

163 kJ/m³
174 kJ/m³

Thermal Diffusivity

13.9 mm²/s
13.8 mm²/s

Same in both: Thermal Shock Resistance Index 10

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.

2005001,0002,0007.588.5Density (g/cm³)Yield strength (MPa) — log scaleA216 WCAGP240GH

Manufacturing and finishing

CapabilityA216 WCAGP240GH
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 GP240GH — frequently asked

Is GP240GH stronger than A216 WCA?

Yes. GP240GH has a typical yield strength of 270 MPa (39.2 ksi) against 255 MPa (37 ksi) for A216 WCA — about 6% more. Tensile strength is 490 MPa (71.1 ksi) vs 455 MPa (66 ksi).

Which is cheaper, A216 WCA or GP240GH?

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 GP240GH?

A216 WCA, by a small margin. Both rate good for machinability — 68/100 against 60/100 for GP240GH.

Ready to make it?

Upload a CAD file and FabDigit prices the part in A216 WCA and GP240GH 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.