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Steel 34MnB5 vs P460QL1

Steel · grade comparison

Steel 34MnB5 and P460QL1 are both steel grades. P460QL1 is the stronger of the two: yield strength 500 MPa (72.5 ksi) against 420 MPa (60.9 ksi) for 34MnB5, about 19% more. P460QL1 is the more ductile: elongation 22% versus 14% for 34MnB5, and P460QL1 is harder (210 HB vs 185 HB). On the shop floor, P460QL1 welds better (very good vs good) and P460QL1 sits in a lower cost tier (budget, $) than 34MnB5 (standard, $$).

P460QL1Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.

34MnB5 vs P460QL1: properties

34MnB5P460QL1

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Shear Modulus

80 GPa11.6 Msi
81 GPa11.7 Msi

Poisson's Ratio

0.29
0.3

Tensile Strength (Ultimate)

620 MPa89.9 ksi
630 MPa91.4 ksi

Yield Strength (0.2% offset)

420 MPa60.9 ksi
500 MPa72.5 ksi

Elongation at Break

14%
22%

Reduction in Area

45%
60%

Shear Strength

400 MPa58 ksi
380 MPa55.1 ksi

Fatigue Strength (Endurance Limit)

280 MPa40.6 ksi
290 MPa42.1 ksi

Fracture Toughness (K_IC)

55 MPa·√m50.1 ksi·√in
150 MPa·√m137 ksi·√in

Charpy V-Notch Impact (RT)

40 J29.5 ft·lbf
160 J118 ft·lbf

Hardness, Brinell

185 HB
210 HB

Hardness, Rockwell B

89 HRB
94 HRB

Hardness, Vickers

195 HV
220 HV

Compressive Strength

—
500 MPa72.5 ksi

Hardness, Rockwell C

—
18 HRC

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

Physical

Density and transition temperatures.

Melting Point (Solidus)

1,420°C2,588 °F
1,425°C2,597 °F

Liquidus Temperature

1,495°C2,723 °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

44 W/m·K25.4 BTU/hr·ft·°F
40 W/m·K23.1 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

12.5 µm/m·K6.9 µin/in·°F
12 µm/m·K6.7 µin/in·°F

Latent Heat of Fusion

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

Same in both: Max Service Temperature (continuous) 400°C752 °F · Min Service Temperature -40°C-40 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

8 % IACS
7.2 % IACS

Electrical Resistivity

2.2×10⁻⁷ Ω·m8.66 µΩ·in
2.4×10⁻⁷ Ω·m9.45 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

11 / 100
12 / 100

Same in both: Galvanic Potential (seawater, vs SCE) -0.6 V

Manufacturability

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

Machinability

55 / 100
50 / 100

Machinability Rating (AISI 1212 = 100 %)

60%
55%

Weldability

55 / 100
70 / 100

Formability (cold)

60 / 100
45 / 100

Brazeability / Solderability

45 / 100
40 / 100

Polishability

55 / 100
45 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

25 MJ/kg10,748 BTU/lb
26 MJ/kg11,178 BTU/lb

Embodied Carbon (primary production)

2 kg CO₂/kg
2.1 kg CO₂/kg

Embodied Water

40 L/kg4.8 gal/lb
55 L/kg6.6 gal/lb

Typical Recycled Content

25%
20%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

79 kN·m/kg
80 kN·m/kg

Modulus of Resilience

420 kJ/m³
595 kJ/m³

Thermal Diffusivity

11.9 mm²/s
11.1 mm²/s

Same in both: Specific Stiffness (E / density) 26.8 MN·m/kg · Thermal Shock Resistance Index 10

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 scale34MnB5P460QL1

Manufacturing and finishing

Capability34MnB5P460QL1
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.

34MnB5 vs P460QL1 — frequently asked

Is P460QL1 stronger than 34MnB5?

Yes. P460QL1 has a typical yield strength of 500 MPa (72.5 ksi) against 420 MPa (60.9 ksi) for 34MnB5 — about 19% more. Tensile strength is 630 MPa (91.4 ksi) vs 620 MPa (89.9 ksi).

Which is cheaper, 34MnB5 or P460QL1?

P460QL1 is the lower-cost material: it sits in the budget tier ($) while 34MnB5 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, 34MnB5 or P460QL1?

34MnB5. Its machinability rates good (55/100) against fair (50/100) for P460QL1; for welding the order is P460QL1 first (very good, 70/100) then 34MnB5 (good, 55/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in 34MnB5 and P460QL1 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.