FabDigitFabDigit

Steel MS1700 vs Usibor 1500

Steel · grade comparison

Steel MS1700 and Usibor 1500 are both steel grades, both high strength steel. MS1700 is the stronger of the two: yield strength 1,450 MPa (210 ksi) against 400 MPa (58 ksi) for Usibor 1500, about 3.6 times as much; tensile strength follows at 1,780 MPa (258 ksi) vs 600 MPa (87 ksi). In exchange, Usibor 1500 is the more ductile: elongation 15% versus 4% for MS1700, and MS1700 is harder (520 HV vs 190 HV). Usibor 1500 runs hotter in service (350°C vs 200°C continuous). On the shop floor, Usibor 1500 machines more easily (good vs poor) and Usibor 1500 welds better (very good vs good).

MS1700Choose it when strength drives the design.

Usibor 1500Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.

MS1700 vs Usibor 1500: properties

MS1700Usibor 1500

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Tensile Strength (Ultimate)

1,780 MPa258 ksi
600 MPa87 ksi

Yield Strength (0.2% offset)

1,450 MPa210 ksi
400 MPa58 ksi

Elongation at Break

4%
15%

Compressive Strength

1,450 MPa210 ksi
400 MPa58 ksi

Shear Strength

1,050 MPa152 ksi
360 MPa52.2 ksi

Fatigue Strength (Endurance Limit)

700 MPa102 ksi
260 MPa37.7 ksi

Fracture Toughness (K_IC)

50 MPa·√m45.5 ksi·√in
—

Hardness, Rockwell C

50 HRC
—

Hardness, Vickers

520 HV
190 HV

Hardness, Brinell

—
180 HB

Hardness, Rockwell B

—
89 HRB

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

1,420°C2,588 °F
1,490°C2,714 °F

Liquidus Temperature

1,500°C2,732 °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

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
247 J/g106 BTU/lb

Max Service Temperature (continuous)

200°C392 °F
350°C662 °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 · Min Service Temperature -40°C-40 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

8 % IACS
8.6 % IACS

Electrical Resistivity

2.2×10⁻⁷ Ω·m8.66 µΩ·in
2×10⁻⁷ Ω·m7.87 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.6 V
-0.75 V

Corrosion Resistance

12 / 100
35 / 100

Manufacturability

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

Machinability

20 / 100
55 / 100

Machinability Rating (AISI 1212 = 100 %)

20%
60%

Weldability

55 / 100
70 / 100

Formability (cold)

12 / 100
55 / 100

Brazeability / Solderability

30 / 100
40 / 100

Polishability

55 / 100
40 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Carbon (primary production)

2.3 kg CO₂/kg
2.4 kg CO₂/kg

Embodied Water

45 L/kg5.4 gal/lb
50 L/kg6 gal/lb

Typical Recycled Content

25%
20%

Same in both: Embodied Energy (primary production) 30 MJ/kg12,898 BTU/lb

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

227 kN·m/kg
76 kN·m/kg

Modulus of Resilience

5,006 kJ/m³
381 kJ/m³

Thermal Diffusivity

8.7 mm²/s
9.2 mm²/s

Thermal Shock Resistance Index

22
8

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 scaleMS1700Usibor 1500

Manufacturing and finishing

CapabilityMS1700Usibor 1500
Default conditionCRAluminized
Relative cost$$ Standard$$ Standard
Min. machined wall——
Best machined surface——

Both are offered for Sheet metal. Both take the same 22 finishes: Black Oxide, Cerakote, Chrome Plating, Copper Plating, E-Coating, Electroless Nickel (EN), Epoxy Coating, Gold Plating, Hard Chrome Plating, Hot-Dip Galvanizing, Manganese Phosphate, Nickel Plating and 10 more.

MS1700 vs Usibor 1500 — frequently asked

Is MS1700 stronger than Usibor 1500?

Yes. MS1700 has a typical yield strength of 1,450 MPa (210 ksi) against 400 MPa (58 ksi) for Usibor 1500 — about 3.6 times as much. Tensile strength is 1,780 MPa (258 ksi) vs 600 MPa (87 ksi).

Which is cheaper, MS1700 or Usibor 1500?

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, MS1700 or Usibor 1500?

Usibor 1500. Its machinability rates good (55/100) against poor (20/100) for MS1700; for welding the order is Usibor 1500 first (very good, 70/100) then MS1700 (good, 55/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in MS1700 and Usibor 1500 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.