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Steel 22MnB5 vs CP1200

Steel · grade comparison

Steel 22MnB5 and CP1200 are both steel grades. CP1200 is the stronger of the two: yield strength 1,100 MPa (160 ksi) against 380 MPa (55.1 ksi) for 22MnB5, about 189% more; tensile strength follows at 1,280 MPa (186 ksi) vs 560 MPa (81.2 ksi). In exchange, 22MnB5 is the more ductile: elongation 22% versus 6% for CP1200, and CP1200 is harder (370 HB vs 160 HB). 22MnB5 runs hotter in service (250°C vs 200°C continuous). On the shop floor, 22MnB5 machines more easily (good vs poor) and CP1200 sits in a lower cost tier (budget, $) than 22MnB5 (standard, $$).

22MnB5Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.

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

22MnB5 vs CP1200: properties

22MnB5CP1200

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

210 GPa30.5 Msi
207 GPa30 Msi

Shear Modulus

81 GPa11.7 Msi
80 GPa11.6 Msi

Tensile Strength (Ultimate)

560 MPa81.2 ksi
1,280 MPa186 ksi

Yield Strength (0.2% offset)

380 MPa55.1 ksi
1,100 MPa160 ksi

Elongation at Break

22%
6%

Reduction in Area

55%
35%

Shear Strength

380 MPa55.1 ksi
800 MPa116 ksi

Fatigue Strength (Endurance Limit)

250 MPa36.3 ksi
550 MPa79.8 ksi

Charpy V-Notch Impact (RT)

60 J44.3 ft·lbf
22 J16.2 ft·lbf

Hardness, Brinell

160 HB
370 HB

Hardness, Rockwell B

85 HRB
—

Hardness, Vickers

170 HV
390 HV

Compressive Strength

—
1,100 MPa160 ksi

Fracture Toughness (K_IC)

—
55 MPa·√m50.1 ksi·√in

Hardness, Rockwell C

—
39 HRC

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

Physical

Density and transition temperatures.

Melting Point (Solidus)

1,465°C2,669 °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

Specific Heat Capacity

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

Latent Heat of Fusion

260 J/g112 BTU/lb
250 J/g107 BTU/lb

Max Service Temperature (continuous)

250°C482 °F
200°C392 °F

Min Service Temperature

-40°C-40 °F
-60°C-76 °F

Same in both: Thermal Expansion (CTE, 20–100 °C) 12.5 µm/m·K6.9 µin/in·°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

55 / 100
25 / 100

Machinability Rating (AISI 1212 = 100 %)

60%
25%

Weldability

65 / 100
62 / 100

Formability (cold)

60 / 100
25 / 100

Brazeability / Solderability

50 / 100
45 / 100

Same in both: Polishability 55 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

25 MJ/kg10,748 BTU/lb
30 MJ/kg12,898 BTU/lb

Embodied Carbon (primary production)

2.1 kg CO₂/kg
2.3 kg CO₂/kg

Typical Recycled Content

20%
22%

Same in both: Embodied Water 40 L/kg4.8 gal/lb

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

71 kN·m/kg
163 kN·m/kg

Specific Stiffness (E / density)

26.8 MN·m/kg
26.4 MN·m/kg

Modulus of Resilience

344 kJ/m³
2,923 kJ/m³

Thermal Diffusivity

8.5 mm²/s
9.2 mm²/s

Thermal Shock Resistance Index

7
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 scale22MnB5CP1200

Manufacturing and finishing

Capability22MnB5CP1200
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.

22MnB5 vs CP1200 — frequently asked

Is CP1200 stronger than 22MnB5?

Yes. CP1200 has a typical yield strength of 1,100 MPa (160 ksi) against 380 MPa (55.1 ksi) for 22MnB5 — about 189% more. Tensile strength is 1,280 MPa (186 ksi) vs 560 MPa (81.2 ksi).

Which is cheaper, 22MnB5 or CP1200?

CP1200 is the lower-cost material: it sits in the budget tier ($) while 22MnB5 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, 22MnB5 or CP1200?

22MnB5. Its machinability rates good (55/100) against poor (25/100) for CP1200.

Ready to make it?

Upload a CAD file and FabDigit prices the part in 22MnB5 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.