FabDigit

Steel A570 vs SPHD vs DC03 vs DC05

Benchmark · 4 materials

Side-by-side benchmark of 4 steel grades.

A570 vs SPHD and 2 more: properties

A570SPHDDC03DC05

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

200 GPa29 Msi
205 GPa29.7 Msi
210 GPa30.5 Msi
210 GPa30.5 Msi

Shear Modulus

79 GPa11.5 Msi
80 GPa11.6 Msi
80 GPa11.6 Msi
81 GPa11.7 Msi

Tensile Strength (Ultimate)

400 MPa58 ksi
320 MPa46.4 ksi
310 MPa45 ksi
300 MPa43.5 ksi

Yield Strength (0.2% offset)

285 MPa41.3 ksi
230 MPa33.4 ksi
195 MPa28.3 ksi
160 MPa23.2 ksi

Elongation at Break

22%
37%
38%
42%

Reduction in Area

55%
65%
65%
70%

Shear Strength

260 MPa37.7 ksi
205 MPa29.7 ksi
230 MPa33.4 ksi
225 MPa32.6 ksi

Fatigue Strength (Endurance Limit)

180 MPa26.1 ksi
155 MPa22.5 ksi
145 MPa21 ksi
150 MPa21.8 ksi

Fracture Toughness (K_IC)

120 MPa·√m109 ksi·√in
100 MPa·√m91 ksi·√in
140 MPa·√m127 ksi·√in

Charpy V-Notch Impact (RT)

40 J29.5 ft·lbf
55 J40.6 ft·lbf
80 J59 ft·lbf

Hardness, Brinell

120 HB
100 HB
95 HB
85 HB

Hardness, Rockwell B

70 HRB
55 HRB
55 HRB
42 HRB

Compressive Strength

230 MPa33.4 ksi

Hardness, Vickers

105 HV
100 HV
90 HV

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

Physical

Density and transition temperatures.

Melting Point (Solidus)

1,425°C2,597 °F
1,495°C2,723 °F
1,490°C2,714 °F
1,480°C2,696 °F

Liquidus Temperature

1,510°C2,750 °F
1,530°C2,786 °F
1,525°C2,777 °F
1,525°C2,777 °F

Same in both: Density 7.85 g/cm³0.28 lb/in³

Thermal

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

Thermal Conductivity

51.9 W/m·K30 BTU/hr·ft·°F
51 W/m·K29.5 BTU/hr·ft·°F
54 W/m·K31.2 BTU/hr·ft·°F
55 W/m·K31.8 BTU/hr·ft·°F

Specific Heat Capacity

486 J/kg·K0.12 BTU/lb·°F
480 J/kg·K0.11 BTU/lb·°F
470 J/kg·K0.11 BTU/lb·°F
470 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
12 µm/m·K6.7 µin/in·°F
12 µm/m·K6.7 µin/in·°F

Max Service Temperature (continuous)

400°C752 °F
350°C662 °F
350°C662 °F
300°C572 °F

Min Service Temperature

-20°C-4 °F
-20°C-4 °F
-30°C-22 °F
-40°C-40 °F

Same in both: Latent Heat of Fusion 247 J/g106 BTU/lb

Electrical

Conductivity and insulation.

Electrical Conductivity

10.8 % IACS
10.8 % IACS
11 % IACS
11.5 % IACS

Electrical Resistivity

1.6×10⁻⁷ Ω·m6.3 µΩ·in
1.6×10⁻⁷ Ω·m6.3 µΩ·in
1.6×10⁻⁷ Ω·m6.3 µΩ·in
1.5×10⁻⁷ Ω·m5.91 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.65 V
-0.61 V
-0.61 V
-0.62 V

Same in both: Corrosion Resistance 10 / 100

Manufacturability

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

Machinability

60 / 100
55 / 100
50 / 100
55 / 100

Machinability Rating (AISI 1212 = 100 %)

60%
55%
55%
55%

Weldability

92 / 100
92 / 100
95 / 100
95 / 100

Formability (cold)

70 / 100
90 / 100
88 / 100
97 / 100

Polishability

40 / 100
40 / 100
50 / 100
60 / 100

Same in both: Brazeability / Solderability 70 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

25 MJ/kg10,748 BTU/lb
25 MJ/kg10,748 BTU/lb
28 MJ/kg12,038 BTU/lb
29 MJ/kg12,468 BTU/lb

Embodied Carbon (primary production)

2 kg CO₂/kg
2.2 kg CO₂/kg
2.3 kg CO₂/kg
2.4 kg CO₂/kg

Embodied Water

40 L/kg4.8 gal/lb
40 L/kg4.8 gal/lb
40 L/kg4.8 gal/lb
35 L/kg4.2 gal/lb

Same in both: Typical Recycled Content 25%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

51 kN·m/kg
41 kN·m/kg
39 kN·m/kg
38 kN·m/kg

Specific Stiffness (E / density)

25.5 MN·m/kg
26.1 MN·m/kg
26.8 MN·m/kg
26.8 MN·m/kg

Modulus of Resilience

203 kJ/m³
129 kJ/m³
91 kJ/m³
61 kJ/m³

Thermal Diffusivity

13.6 mm²/s
13.5 mm²/s
14.6 mm²/s
14.9 mm²/s

Thermal Shock Resistance Index

9
7
7
7

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 scaleSPHDDC03DC05A570

Manufacturing and finishing

CapabilityA570SPHDDC03DC05
Sheet metalYes
Default conditionHR
Relative cost$ Budget$ Budget$ Budget$ Budget
Min. machined wall
Best machined surface
Black OxideYes
CerakoteYes
Chrome PlatingYes
E-CoatingYes
Hot-Dip GalvanizingYes
Nickel PlatingYes
PTFE CoatingYes
PaintingYes
Powder CoatingYes
Tin PlatingYes
Zinc PlatingYes
Zinc-Flake (Dip-Spin) CoatingYes
Zinc-Nickel PlatingYes

They share 9 finishes: Copper Plating, Electroless Nickel (EN), Epoxy Coating, Gold Plating, Hard Chrome Plating, Manganese Phosphate, Plasma Spray, Silver Plating, Zinc Phosphate.

Ready to make it?

Upload a CAD file and FabDigit prices the part in A570 and SPHD 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.