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Steel 34MnB5 vs S460ML

Steel · grade comparison

Steel 34MnB5 and S460ML are both steel grades. S460ML is the stronger of the two: yield strength 490 MPa (71.1 ksi) against 420 MPa (60.9 ksi) for 34MnB5, about 17% more. S460ML is the more ductile: elongation 22% versus 14% for 34MnB5. On the shop floor, S460ML welds better (excellent vs good) and S460ML sits in a lower cost tier (budget, $) than 34MnB5 (standard, $$).

S460MLChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.

34MnB5 vs S460ML: properties

34MnB5S460ML

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
600 MPa87 ksi

Yield Strength (0.2% offset)

420 MPa60.9 ksi
490 MPa71.1 ksi

Elongation at Break

14%
22%

Reduction in Area

45%
55%

Shear Strength

400 MPa58 ksi
370 MPa53.7 ksi

Fatigue Strength (Endurance Limit)

280 MPa40.6 ksi
270 MPa39.2 ksi

Fracture Toughness (K_IC)

55 MPa·√m50.1 ksi·√in
130 MPa·√m118 ksi·√in

Charpy V-Notch Impact (RT)

40 J29.5 ft·lbf
160 J118 ft·lbf

Hardness, Brinell

185 HB
190 HB

Hardness, Rockwell B

89 HRB
91 HRB

Hardness, Vickers

195 HV
200 HV

Compressive Strength

—
490 MPa71.1 ksi

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
1,460°C2,660 °F

Liquidus Temperature

1,495°C2,723 °F
1,520°C2,768 °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
45 W/m·K26 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

Max Service Temperature (continuous)

400°C752 °F
380°C716 °F

Min Service Temperature

-40°C-40 °F
-50°C-58 °F

Same in both: Latent Heat of Fusion 250 J/g107 BTU/lb

Electrical

Conductivity and insulation.

Same in both: Electrical Conductivity 8 % IACS · Electrical Resistivity 2.2×10⁻⁷ Ω·m8.66 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.6 V
-0.62 V

Corrosion Resistance

11 / 100
12 / 100

Manufacturability

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

Machinability

55 / 100
52 / 100

Machinability Rating (AISI 1212 = 100 %)

60%
55%

Weldability

55 / 100
88 / 100

Formability (cold)

60 / 100
62 / 100

Polishability

55 / 100
45 / 100

Same in both: Brazeability / Solderability 45 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

25 MJ/kg10,748 BTU/lb
29 MJ/kg12,468 BTU/lb

Embodied Carbon (primary production)

2 kg CO₂/kg
2.1 kg CO₂/kg

Embodied Water

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

Same in both: Typical Recycled Content 25%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

79 kN·m/kg
76 kN·m/kg

Modulus of Resilience

420 kJ/m³
572 kJ/m³

Thermal Diffusivity

11.9 mm²/s
12.5 mm²/s

Thermal Shock Resistance Index

10
11

Same in both: Specific Stiffness (E / density) 26.8 MN·m/kg

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 scale34MnB5S460ML

Manufacturing and finishing

Capability34MnB5S460ML
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 S460ML — frequently asked

Is S460ML stronger than 34MnB5?

Yes. S460ML has a typical yield strength of 490 MPa (71.1 ksi) against 420 MPa (60.9 ksi) for 34MnB5 — about 17% more. Tensile strength is 600 MPa (87 ksi) vs 620 MPa (89.9 ksi).

Which is cheaper, 34MnB5 or S460ML?

S460ML 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 welds better, 34MnB5 or S460ML?

S460ML. Its weldability rates excellent (88/100) against good (55/100) for 34MnB5.

Ready to make it?

Upload a CAD file and FabDigit prices the part in 34MnB5 and S460ML 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.