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Steel 1.2344 vs P20+Ni

Steel · grade comparison

Steel 1.2344 and P20+Ni are both steel grades, both mold steel. 1.2344 is the stronger of the two: yield strength 500 MPa (72.5 ksi) against 430 MPa (62.4 ksi) for P20+Ni, about 16% more; tensile strength follows at 800 MPa (116 ksi) vs 700 MPa (102 ksi). P20+Ni conducts heat better (34 W/m·K vs 24.5 W/m·K). On the shop floor, P20+Ni machines more easily (good vs fair), P20+Ni welds better (50 vs 35 out of 100), and P20+Ni forms better (30 vs 20 out of 100).

1.2344Choose it when strength drives the design.

P20+NiChoose it when the part is machined in volume, or when it will be welded.

1.2344 vs P20+Ni: properties

1.2344P20+Ni

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Shear Modulus

81 GPa11.7 Msi
80 GPa11.6 Msi

Poisson's Ratio

0.3
0.29

Tensile Strength (Ultimate)

800 MPa116 ksi
700 MPa102 ksi

Yield Strength (0.2% offset)

500 MPa72.5 ksi
430 MPa62.4 ksi

Reduction in Area

45%
55%

Compressive Strength

520 MPa75.4 ksi
900 MPa131 ksi

Shear Strength

480 MPa69.6 ksi
620 MPa89.9 ksi

Fatigue Strength (Endurance Limit)

360 MPa52.2 ksi
330 MPa47.9 ksi

Charpy V-Notch Impact (RT)

30 J22.1 ft·lbf
40 J29.5 ft·lbf

Hardness, Brinell

215 HB
210 HB

Hardness, Rockwell B

96 HRB
95 HRB

Hardness, Vickers

225 HV
220 HV

Fracture Toughness (K_IC)

—
80 MPa·√m72.8 ksi·√in

Hardness, Rockwell C

—
31 HRC

Same in both: Elastic (Young's) Modulus 210 GPa30.5 Msi · Bulk Modulus 160 GPa23.2 Msi · Elongation at Break 20%

Physical

Density and transition temperatures.

Density

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

Melting Point (Solidus)

1,427°C2,601 °F
1,420°C2,588 °F

Liquidus Temperature

1,482°C2,700 °F
1,470°C2,678 °F

Thermal

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

Thermal Conductivity

24.5 W/m·K14.2 BTU/hr·ft·°F
34 W/m·K19.6 BTU/hr·ft·°F

Thermal Expansion (CTE, 20–100 °C)

11.5 µm/m·K6.4 µin/in·°F
12.3 µm/m·K6.8 µin/in·°F

Min Service Temperature

-40°C-40 °F
-20°C-4 °F

Same in both: Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Latent Heat of Fusion 250 J/g107 BTU/lb · Max Service Temperature (continuous) 400°C752 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

3.3 % IACS
—

Electrical Resistivity

5.2×10⁻⁷ Ω·m20.5 µΩ·in
2.4×10⁻⁷ Ω·m9.45 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.58 V
-0.62 V

Corrosion Resistance

20 / 100
15 / 100

Manufacturability

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

Machinability

45 / 100
62 / 100

Machinability Rating (AISI 1212 = 100 %)

55%
70%

Weldability

35 / 100
50 / 100

Formability (cold)

20 / 100
30 / 100

Brazeability / Solderability

30 / 100
40 / 100

Polishability

70 / 100
60 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

36 MJ/kg15,477 BTU/lb
30 MJ/kg12,898 BTU/lb

Embodied Carbon (primary production)

2.7 kg CO₂/kg
2.2 kg CO₂/kg

Embodied Water

70 L/kg8.4 gal/lb
60 L/kg7.2 gal/lb

Typical Recycled Content

60%
30%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

103 kN·m/kg
89 kN·m/kg

Specific Stiffness (E / density)

26.9 MN·m/kg
26.8 MN·m/kg

Modulus of Resilience

595 kJ/m³
440 kJ/m³

Thermal Diffusivity

6.8 mm²/s
9.4 mm²/s

Thermal Shock Resistance Index

8
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 scale1.2344P20+Ni

Manufacturing and finishing

Capability1.2344P20+Ni
Default conditionAnnealedAnnealed
Relative cost$$ Standard$$ Standard
Min. machined wall0.8 mm0.8 mm
Best machined surfaceRa 1.6 µmRa 1.6 µm

Both are offered for CNC machining. Both take the same 38 finishes: AlCrN, AlTiN, Black Oxide, CVD Al2O3, CVD TiCN, CVD TiN, Cerakote, Chrome Plating, Copper Plating, CrN, DLC, E-Coating and 26 more.

1.2344 vs P20+Ni — frequently asked

Is 1.2344 stronger than P20+Ni?

Yes. 1.2344 has a typical yield strength of 500 MPa (72.5 ksi) against 430 MPa (62.4 ksi) for P20+Ni — about 16% more. Tensile strength is 800 MPa (116 ksi) vs 700 MPa (102 ksi).

Which is cheaper, 1.2344 or P20+Ni?

Both sit in the same relative cost tier ($$, standard); the part price will be decided by machining time, tolerance and quantity rather than by the material.

Which is easier to machine, 1.2344 or P20+Ni?

P20+Ni. Its machinability rates good (62/100) against fair (45/100) for 1.2344; for welding the order is P20+Ni first (fair, 50/100) then 1.2344 (fair, 35/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in 1.2344 and P20+Ni 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.