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Steel A216 WCA vs GS200

Steel · grade comparison

Steel A216 WCA and GS200 are both steel grades. A216 WCA is the stronger of the two: yield strength 255 MPa (37 ksi) against 220 MPa (31.9 ksi) for GS200, about 16% more; tensile strength follows at 455 MPa (66 ksi) vs 430 MPa (62.4 ksi). A216 WCA is the more ductile: elongation 31% versus 25% for GS200.

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

A216 WCA vs GS200: properties

A216 WCAGS200

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

200 GPa29 Msi
205 GPa29.7 Msi

Shear Modulus

78 GPa11.3 Msi
80 GPa11.6 Msi

Tensile Strength (Ultimate)

455 MPa66 ksi
430 MPa62.4 ksi

Yield Strength (0.2% offset)

255 MPa37 ksi
220 MPa31.9 ksi

Elongation at Break

31%
25%

Reduction in Area

50%
40%

Compressive Strength

255 MPa37 ksi
220 MPa31.9 ksi

Shear Strength

285 MPa41.3 ksi
280 MPa40.6 ksi

Fatigue Strength (Endurance Limit)

200 MPa29 ksi
180 MPa26.1 ksi

Fracture Toughness (K_IC)

90 MPa·√m81.9 ksi·√in
100 MPa·√m91 ksi·√in

Charpy V-Notch Impact (RT)

48 J35.4 ft·lbf
35 J25.8 ft·lbf

Hardness, Brinell

130 HB
125 HB

Hardness, Rockwell B

72 HRB
70 HRB

Hardness, Vickers

—
130 HV

Same in both: Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29

Physical

Density and transition temperatures.

Density

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

Same in both: Melting Point (Solidus) 1,425°C2,597 °F · Liquidus Temperature 1,510°C2,750 °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

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
270 J/g116 BTU/lb

Min Service Temperature

-29°C-20 °F
-20°C-4 °F

Same in both: Specific Heat Capacity 470 J/kg·K0.11 BTU/lb·°F · 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
-0.61 V

Same in both: Corrosion Resistance 10 / 100

Manufacturability

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

Machinability

68 / 100
62 / 100

Machinability Rating (AISI 1212 = 100 %)

70%
68%

Weldability

85 / 100
88 / 100

Formability (cold)

20 / 100
25 / 100

Castability

72 / 100
78 / 100

Brazeability / Solderability

55 / 100
70 / 100

Polishability

40 / 100
50 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

26 MJ/kg11,178 BTU/lb
25 MJ/kg10,748 BTU/lb

Embodied Carbon (primary production)

2.1 kg CO₂/kg
2 kg CO₂/kg

Same in both: Embodied Water 45 L/kg5.4 gal/lb · Typical Recycled Content 85%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

58 kN·m/kg
55 kN·m/kg

Specific Stiffness (E / density)

25.5 MN·m/kg
26.1 MN·m/kg

Modulus of Resilience

163 kJ/m³
118 kJ/m³

Thermal Diffusivity

13.9 mm²/s
13.6 mm²/s

Thermal Shock Resistance Index

10
9

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 WCAGS200

Manufacturing and finishing

CapabilityA216 WCAGS200
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 GS200 — frequently asked

Is A216 WCA stronger than GS200?

Yes. A216 WCA has a typical yield strength of 255 MPa (37 ksi) against 220 MPa (31.9 ksi) for GS200 — about 16% more. Tensile strength is 455 MPa (66 ksi) vs 430 MPa (62.4 ksi).

Which is cheaper, A216 WCA or GS200?

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 GS200?

A216 WCA, by a small margin. Both rate good for machinability — 68/100 against 62/100 for GS200.

Ready to make it?

Upload a CAD file and FabDigit prices the part in A216 WCA and GS200 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.