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Steel GX5NiS36 vs K93500

Steel · grade comparison

Steel GX5NiS36 and K93500 are both steel grades. K93500 is the stronger of the two: yield strength 280 MPa (40.6 ksi) against 200 MPa (29 ksi) for GX5NiS36, about 40% more; tensile strength follows at 490 MPa (71.1 ksi) vs 420 MPa (60.9 ksi). K93500 is the more ductile: elongation 40% versus 12% for GX5NiS36. On the shop floor, GX5NiS36 machines more easily (fair vs poor) and K93500 welds better (very good vs poor).

GX5NiS36Choose it when the part is machined in volume.

K93500Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.

GX5NiS36 vs K93500: properties

GX5NiS36K93500

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

140 GPa20.3 Msi
141 GPa20.5 Msi

Shear Modulus

55 GPa8 Msi
57 GPa8.3 Msi

Bulk Modulus

105 GPa15.2 Msi
100 GPa14.5 Msi

Tensile Strength (Ultimate)

420 MPa60.9 ksi
490 MPa71.1 ksi

Yield Strength (0.2% offset)

200 MPa29 ksi
280 MPa40.6 ksi

Elongation at Break

12%
40%

Reduction in Area

20%
68%

Compressive Strength

430 MPa62.4 ksi
280 MPa40.6 ksi

Shear Strength

300 MPa43.5 ksi
340 MPa49.3 ksi

Fatigue Strength (Endurance Limit)

160 MPa23.2 ksi
240 MPa34.8 ksi

Fracture Toughness (K_IC)

58 MPa·√m52.8 ksi·√in
—

Charpy V-Notch Impact (RT)

20 J14.8 ft·lbf
180 J133 ft·lbf

Hardness, Brinell

135 HB
140 HB

Hardness, Rockwell B

75 HRB
78 HRB

Hardness, Vickers

142 HV
147 HV

Same in both: Poisson's Ratio 0.29

Physical

Density and transition temperatures.

Density

8.1 g/cm³0.29 lb/in³
8.05 g/cm³0.29 lb/in³

Melting Point (Solidus)

1,425°C2,597 °F
1,427°C2,601 °F

Same in both: Liquidus Temperature 1,450°C2,642 °F

Thermal

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

Thermal Conductivity

11.5 W/m·K6.6 BTU/hr·ft·°F
10.5 W/m·K6.1 BTU/hr·ft·°F

Thermal Expansion (CTE, 20–100 °C)

3 µm/m·K1.7 µin/in·°F
1.3 µm/m·K0.72 µin/in·°F

Min Service Temperature

-150°C-238 °F
-269°C-452 °F

Same in both: Specific Heat Capacity 515 J/kg·K0.12 BTU/lb·°F · Latent Heat of Fusion 275 J/g118 BTU/lb · Max Service Temperature (continuous) 200°C392 °F

Electrical

Conductivity and insulation.

Same in both: Electrical Conductivity 2.1 % IACS · Electrical Resistivity 8.2×10⁻⁷ Ω·m32.3 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

30 / 100
22 / 100

Galvanic Potential (seawater, vs SCE)

—
-0.45 V

Manufacturability

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

Machinability

40 / 100
30 / 100

Machinability Rating (AISI 1212 = 100 %)

35%
30%

Weldability

25 / 100
70 / 100

Formability (cold)

10 / 100
85 / 100

Castability

60 / 100
40 / 100

Brazeability / Solderability

55 / 100
80 / 100

Polishability

45 / 100
65 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

110 MJ/kg47,292 BTU/lb
100 MJ/kg42,992 BTU/lb

Embodied Carbon (primary production)

8.5 kg CO₂/kg
7.5 kg CO₂/kg

Embodied Water

300 L/kg35.9 gal/lb
210 L/kg25.2 gal/lb

Typical Recycled Content

35%
30%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

52 kN·m/kg
61 kN·m/kg

Specific Stiffness (E / density)

17.3 MN·m/kg
17.5 MN·m/kg

Modulus of Resilience

143 kJ/m³
278 kJ/m³

Thermal Diffusivity

2.8 mm²/s
2.5 mm²/s

Thermal Shock Resistance Index

12
28

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 scaleGX5NiS36K93500

Manufacturing and finishing

CapabilityGX5NiS36K93500
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

Both take the same 9 finishes: Copper Plating, Electroless Nickel (EN), Epoxy Coating, Gold Plating, Hard Chrome Plating, Manganese Phosphate, Plasma Spray, Silver Plating, Zinc Phosphate.

GX5NiS36 vs K93500 — frequently asked

Is K93500 stronger than GX5NiS36?

Yes. K93500 has a typical yield strength of 280 MPa (40.6 ksi) against 200 MPa (29 ksi) for GX5NiS36 — about 40% more. Tensile strength is 490 MPa (71.1 ksi) vs 420 MPa (60.9 ksi).

Which is cheaper, GX5NiS36 or K93500?

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

Which is easier to machine, GX5NiS36 or K93500?

GX5NiS36. Its machinability rates fair (40/100) against poor (30/100) for K93500; for welding the order is K93500 first (very good, 70/100) then GX5NiS36 (poor, 25/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in GX5NiS36 and K93500 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.