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Steel A217 WC6 vs WC5

Steel · grade comparison

Steel A217 WC6 and WC5 are both steel grades. Both yield at about 345 MPa — strength does not separate them. On the shop floor, A217 WC6 sits in a lower cost tier (standard, $$) than WC5 (premium, $$$).

A217 WC6Choose it when cost is the deciding factor.

A217 WC6 vs WC5: properties

A217 WC6WC5

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

205 GPa29.7 Msi
202 GPa29.3 Msi

Shear Modulus

80 GPa11.6 Msi
78 GPa11.3 Msi

Yield Strength (0.2% offset)

345 MPa50 ksi
330 MPa47.9 ksi

Reduction in Area

48%
45%

Compressive Strength

345 MPa50 ksi
330 MPa47.9 ksi

Fatigue Strength (Endurance Limit)

240 MPa34.8 ksi
235 MPa34.1 ksi

Fracture Toughness (K_IC)

110 MPa·√m100 ksi·√in
105 MPa·√m95.6 ksi·√in

Hardness, Rockwell B

87 HRB
88 HRB

Hardness, Vickers

180 HV
178 HV

Same in both: Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29 · Tensile Strength (Ultimate) 550 MPa79.8 ksi · Elongation at Break 24% · Shear Strength 380 MPa55.1 ksi · Charpy V-Notch Impact (RT) 55 J40.6 ft·lbf · Hardness, Brinell 170 HB

Physical

Density and transition temperatures.

Density

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

Same in both: Melting Point (Solidus) 1,425°C2,597 °F · Liquidus Temperature 1,505°C2,741 °F

Thermal

How each material carries heat and how hot it can run.

Thermal Conductivity

40 W/m·K23.1 BTU/hr·ft·°F
42 W/m·K24.3 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

12.3 µm/m·K6.8 µin/in·°F
12.2 µm/m·K6.8 µin/in·°F

Min Service Temperature

-29°C-20 °F
-30°C-22 °F

Same in both: Latent Heat of Fusion 270 J/g116 BTU/lb · Max Service Temperature (continuous) 540°C1,004 °F

Electrical

Conductivity and insulation.

Same in both: Electrical Conductivity 7.8 % IACS · Electrical Resistivity 2.2×10⁻⁷ Ω·m8.66 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

15 / 100
13 / 100

Galvanic Potential (seawater, vs SCE)

—
-0.61 V

Manufacturability

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

Machinability Rating (AISI 1212 = 100 %)

60%
58%

Formability (cold)

20 / 100
15 / 100

Polishability

55 / 100
45 / 100

Same in both: Machinability 55 / 100 · Weldability 60 / 100 · Castability 70 / 100 · Brazeability / Solderability 45 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Carbon (primary production)

2.1 kg CO₂/kg
2 kg CO₂/kg

Typical Recycled Content

85%
80%

Same in both: Embodied Energy (primary production) 26 MJ/kg11,178 BTU/lb · Embodied Water 55 L/kg6.6 gal/lb

Common Calculations

Ratios derived from the values above.

Specific Stiffness (E / density)

26.1 MN·m/kg
25.8 MN·m/kg

Modulus of Resilience

290 kJ/m³
270 kJ/m³

Thermal Diffusivity

11 mm²/s
11.4 mm²/s

Same in both: Specific Strength (UTS / density) 70 kN·m/kg · Thermal Shock Resistance Index 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 scaleWC5A217 WC6

Manufacturing and finishing

CapabilityA217 WC6WC5
Default condition——
Relative cost$$ Standard$$$ Premium
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.

A217 WC6 vs WC5 — frequently asked

What is the difference between A217 WC6 and WC5?

Steel A217 WC6 and WC5 are both steel grades. Both yield at about 345 MPa — strength does not separate them. On the shop floor, A217 WC6 sits in a lower cost tier (standard, $$) than WC5 (premium, $$$).

Which is cheaper, A217 WC6 or WC5?

A217 WC6 is the lower-cost material: it sits in the standard tier ($$) while WC5 is premium ($$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.

When should I choose A217 WC6 over WC5?

Pick A217 WC6 when cost is the deciding factor.

Ready to make it?

Upload a CAD file and FabDigit prices the part in A217 WC6 and WC5 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.