FabDigitFabDigit

Steel CP1000 vs CP1200

Steel · grade comparison

Steel CP1000 and CP1200 are both steel grades. CP1200 is the stronger of the two: yield strength 1,100 MPa (160 ksi) against 800 MPa (116 ksi) for CP1000, about 38% more; tensile strength follows at 1,280 MPa (186 ksi) vs 1,050 MPa (152 ksi). In exchange, CP1000 is the more ductile: elongation 8% versus 6% for CP1200, and CP1200 is harder (370 HB vs 315 HB). On the shop floor, CP1200 sits in a lower cost tier (budget, $) than CP1000 (standard, $$).

CP1000Choose it when the part is bent, formed or impact-loaded.

CP1200Choose it when strength drives the design, or when cost is the deciding factor.

CP1000 vs CP1200: properties

CP1000CP1200

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

210 GPa30.5 Msi
207 GPa30 Msi

Tensile Strength (Ultimate)

1,050 MPa152 ksi
1,280 MPa186 ksi

Yield Strength (0.2% offset)

800 MPa116 ksi
1,100 MPa160 ksi

Elongation at Break

8%
6%

Reduction in Area

30%
35%

Compressive Strength

1,050 MPa152 ksi
1,100 MPa160 ksi

Shear Strength

655 MPa95 ksi
800 MPa116 ksi

Fatigue Strength (Endurance Limit)

470 MPa68.2 ksi
550 MPa79.8 ksi

Fracture Toughness (K_IC)

50 MPa·√m45.5 ksi·√in
55 MPa·√m50.1 ksi·√in

Charpy V-Notch Impact (RT)

25 J18.4 ft·lbf
22 J16.2 ft·lbf

Hardness, Brinell

315 HB
370 HB

Hardness, Rockwell C

33 HRC
39 HRC

Hardness, Vickers

330 HV
390 HV

Same in both: Shear Modulus 80 GPa11.6 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.3

Physical

Density and transition temperatures.

Melting Point (Solidus)

1,490°C2,714 °F
1,460°C2,660 °F

Liquidus Temperature

1,520°C2,768 °F
1,500°C2,732 °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

32 W/m·K18.5 BTU/hr·ft·°F
34 W/m·K19.6 BTU/hr·ft·°F

Latent Heat of Fusion

270 J/g116 BTU/lb
250 J/g107 BTU/lb

Min Service Temperature

-40°C-40 °F
-60°C-76 °F

Same in both: Specific Heat Capacity 470 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 12.5 µm/m·K6.9 µin/in·°F · Max Service Temperature (continuous) 200°C392 °F

Electrical

Conductivity and insulation.

Electrical Resistivity

2.2×10⁻⁷ Ω·m8.66 µΩ·in
2.15×10⁻⁷ Ω·m8.46 µΩ·in

Same in both: Electrical Conductivity 8 % IACS

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Same in both: Galvanic Potential (seawater, vs SCE) -0.6 V · Corrosion Resistance 12 / 100

Manufacturability

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

Machinability

28 / 100
25 / 100

Weldability

65 / 100
62 / 100

Formability (cold)

35 / 100
25 / 100

Brazeability / Solderability

40 / 100
45 / 100

Same in both: Machinability Rating (AISI 1212 = 100 %) 25% · Polishability 55 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Water

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

Typical Recycled Content

25%
22%

Same in both: Embodied Energy (primary production) 30 MJ/kg12,898 BTU/lb · Embodied Carbon (primary production) 2.3 kg CO₂/kg

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

134 kN·m/kg
163 kN·m/kg

Specific Stiffness (E / density)

26.8 MN·m/kg
26.4 MN·m/kg

Modulus of Resilience

1,524 kJ/m³
2,923 kJ/m³

Thermal Diffusivity

8.7 mm²/s
9.2 mm²/s

Thermal Shock Resistance Index

13
17

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 scaleCP1000CP1200

Manufacturing and finishing

CapabilityCP1000CP1200
Sheet metalYes—
Default conditionCR—
Relative cost$$ Standard$ 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.

CP1000 vs CP1200 — frequently asked

Is CP1200 stronger than CP1000?

Yes. CP1200 has a typical yield strength of 1,100 MPa (160 ksi) against 800 MPa (116 ksi) for CP1000 — about 38% more. Tensile strength is 1,280 MPa (186 ksi) vs 1,050 MPa (152 ksi).

Which is cheaper, CP1000 or CP1200?

CP1200 is the lower-cost material: it sits in the budget tier ($) while CP1000 is standard ($$). 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 CP1000 over CP1200?

Pick CP1000 when the part is bent, formed or impact-loaded. Pick CP1200 when strength drives the design, or when cost is the deciding factor.

Ready to make it?

Upload a CAD file and FabDigit prices the part in CP1000 and CP1200 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.