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Steel 09G2S vs S700MC

Steel · grade comparison

Steel 09G2S and S700MC are both steel grades. S700MC is the stronger of the two: yield strength 740 MPa (107 ksi) against 350 MPa (50.8 ksi) for 09G2S, about 111% more; tensile strength follows at 810 MPa (117 ksi) vs 500 MPa (72.5 ksi). In exchange, 09G2S is the more ductile: elongation 22% versus 14% for S700MC, and S700MC is harder (245 HB vs 150 HB). 09G2S runs hotter in service (400°C vs 300°C continuous) and 09G2S conducts heat better (48 W/m·K vs 40 W/m·K). On the shop floor, 09G2S machines more easily (good vs fair) and 09G2S sits in a lower cost tier (budget, $) than S700MC (standard, $$).

09G2SChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.

S700MCChoose it when strength drives the design.

09G2S vs S700MC: properties

09G2SS700MC

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

206 GPa29.9 Msi
210 GPa30.5 Msi

Shear Modulus

80 GPa11.6 Msi
81 GPa11.7 Msi

Poisson's Ratio

0.28
0.3

Tensile Strength (Ultimate)

500 MPa72.5 ksi
810 MPa117 ksi

Yield Strength (0.2% offset)

350 MPa50.8 ksi
740 MPa107 ksi

Elongation at Break

22%
14%

Compressive Strength

350 MPa50.8 ksi
740 MPa107 ksi

Shear Strength

300 MPa43.5 ksi
490 MPa71.1 ksi

Fatigue Strength (Endurance Limit)

230 MPa33.4 ksi
360 MPa52.2 ksi

Fracture Toughness (K_IC)

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

Charpy V-Notch Impact (RT)

80 J59 ft·lbf
90 J66.4 ft·lbf

Hardness, Brinell

150 HB
245 HB

Hardness, Rockwell B

80 HRB
100 HRB

Hardness, Vickers

158 HV
255 HV

Hardness, Rockwell C

—
23 HRC

Same in both: Bulk Modulus 160 GPa23.2 Msi · Reduction in Area 55%

Physical

Density and transition temperatures.

Melting Point (Solidus)

1,425°C2,597 °F
1,460°C2,660 °F

Liquidus Temperature

1,500°C2,732 °F
1,510°C2,750 °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

48 W/m·K27.7 BTU/hr·ft·°F
40 W/m·K23.1 BTU/hr·ft·°F

Specific Heat Capacity

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

Max Service Temperature (continuous)

400°C752 °F
300°C572 °F

Min Service Temperature

-70°C-94 °F
-40°C-40 °F

Same in both: Thermal Expansion (CTE, 20–100 °C) 12 µm/m·K6.7 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb

Electrical

Conductivity and insulation.

Electrical Resistivity

2.1×10⁻⁷ Ω·m8.27 µΩ·in
2.2×10⁻⁷ Ω·m8.66 µΩ·in

Same in both: Electrical Conductivity 8 % IACS

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

13 / 100
12 / 100

Same in both: Galvanic Potential (seawater, vs SCE) -0.62 V

Manufacturability

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

Machinability

58 / 100
45 / 100

Machinability Rating (AISI 1212 = 100 %)

65%
50%

Weldability

88 / 100
85 / 100

Formability (cold)

70 / 100
65 / 100

Castability

30 / 100
—

Brazeability / Solderability

60 / 100
50 / 100

Polishability

45 / 100
50 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

27 MJ/kg11,608 BTU/lb
25 MJ/kg10,748 BTU/lb

Embodied Carbon (primary production)

2.2 kg CO₂/kg
2 kg CO₂/kg

Embodied Water

45 L/kg5.4 gal/lb
40 L/kg4.8 gal/lb

Typical Recycled Content

30%
25%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

64 kN·m/kg
103 kN·m/kg

Specific Stiffness (E / density)

26.2 MN·m/kg
26.8 MN·m/kg

Modulus of Resilience

297 kJ/m³
1,304 kJ/m³

Thermal Diffusivity

12.7 mm²/s
10.8 mm²/s

Thermal Shock Resistance Index

10
13

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 scaleS700MC09G2S

Manufacturing and finishing

Capability09G2SS700MC
Sheet metal—Yes
Default condition—TMCP
Relative cost$ Budget$$ Standard
Min. machined wall——
Best machined surface——
Black Oxide—Yes
Cerakote—Yes
Chrome Plating—Yes
E-Coating—Yes
Hot-Dip Galvanizing—Yes
Nickel Plating—Yes
PTFE Coating—Yes
Painting—Yes
Powder Coating—Yes
Tin Plating—Yes
Zinc Plating—Yes
Zinc-Flake (Dip-Spin) Coating—Yes
Zinc-Nickel Plating—Yes

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

09G2S vs S700MC — frequently asked

Is S700MC stronger than 09G2S?

Yes. S700MC has a typical yield strength of 740 MPa (107 ksi) against 350 MPa (50.8 ksi) for 09G2S — about 111% more. Tensile strength is 810 MPa (117 ksi) vs 500 MPa (72.5 ksi).

Which is cheaper, 09G2S or S700MC?

09G2S is the lower-cost material: it sits in the budget tier ($) while S700MC 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 is easier to machine, 09G2S or S700MC?

09G2S. Its machinability rates good (58/100) against fair (45/100) for S700MC.

Ready to make it?

Upload a CAD file and FabDigit prices the part in 09G2S and S700MC 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.