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Steel A242 vs X60

Steel · grade comparison

Steel A242 and X60 are both steel grades. X60 is the stronger of the two: yield strength 465 MPa (67.4 ksi) against 370 MPa (53.7 ksi) for A242, about 26% more; tensile strength follows at 560 MPa (81.2 ksi) vs 510 MPa (74 ksi). X60 is the more ductile: elongation 30% versus 24% for A242, and X60 is harder (172 HB vs 155 HB). X60 runs hotter in service (400°C vs 350°C continuous) and X60 conducts electricity better (9.5 % IACS vs 8.5 % IACS). On the shop floor, X60 welds better (excellent vs very good).

X60Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.

A242 vs X60: properties

A242X60

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

200 GPa29 Msi
207 GPa30 Msi

Shear Modulus

79 GPa11.5 Msi
80 GPa11.6 Msi

Tensile Strength (Ultimate)

510 MPa74 ksi
560 MPa81.2 ksi

Yield Strength (0.2% offset)

370 MPa53.7 ksi
465 MPa67.4 ksi

Elongation at Break

24%
30%

Reduction in Area

50%
65%

Compressive Strength

370 MPa53.7 ksi
465 MPa67.4 ksi

Shear Strength

320 MPa46.4 ksi
340 MPa49.3 ksi

Fatigue Strength (Endurance Limit)

245 MPa35.5 ksi
255 MPa37 ksi

Fracture Toughness (K_IC)

120 MPa·√m109 ksi·√in
170 MPa·√m155 ksi·√in

Charpy V-Notch Impact (RT)

55 J40.6 ft·lbf
180 J133 ft·lbf

Hardness, Brinell

155 HB
172 HB

Hardness, Rockwell B

82 HRB
87 HRB

Hardness, Vickers

163 HV
180 HV

Same in both: Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29

Physical

Density and transition temperatures.

Melting Point (Solidus)

1,450°C2,642 °F
1,490°C2,714 °F

Liquidus Temperature

1,510°C2,750 °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 Expansion (CTE, 20–100 °C)

11.7 µm/m·K6.5 µin/in·°F
12 µm/m·K6.7 µin/in·°F

Latent Heat of Fusion

247 J/g106 BTU/lb
270 J/g116 BTU/lb

Max Service Temperature (continuous)

350°C662 °F
400°C752 °F

Min Service Temperature

-30°C-22 °F
-45°C-49 °F

Same in both: Thermal Conductivity 48 W/m·K27.7 BTU/hr·ft·°F · Specific Heat Capacity 470 J/kg·K0.11 BTU/lb·°F

Electrical

Conductivity and insulation.

Electrical Conductivity

8.5 % IACS
9.5 % IACS

Electrical Resistivity

2×10⁻⁷ Ω·m7.87 µΩ·in
1.8×10⁻⁷ Ω·m7.09 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.6 V
-0.65 V

Corrosion Resistance

35 / 100
12 / 100

Manufacturability

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

Machinability Rating (AISI 1212 = 100 %)

60%
57%

Weldability

80 / 100
92 / 100

Formability (cold)

65 / 100
72 / 100

Brazeability / Solderability

40 / 100
55 / 100

Same in both: Machinability 58 / 100 · Polishability 40 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Carbon (primary production)

1.9 kg CO₂/kg
2 kg CO₂/kg

Embodied Water

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

Typical Recycled Content

30%
25%

Same in both: Embodied Energy (primary production) 25 MJ/kg10,748 BTU/lb

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

65 kN·m/kg
71 kN·m/kg

Specific Stiffness (E / density)

25.5 MN·m/kg
26.4 MN·m/kg

Modulus of Resilience

342 kJ/m³
522 kJ/m³

Thermal Shock Resistance Index

10
11

Same in both: Thermal Diffusivity 13 mm²/s

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 scaleA242X60

Manufacturing and finishing

CapabilityA242X60
Default condition——
Relative cost$ Budget$ Budget
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.

A242 vs X60 — frequently asked

Is X60 stronger than A242?

Yes. X60 has a typical yield strength of 465 MPa (67.4 ksi) against 370 MPa (53.7 ksi) for A242 — about 26% more. Tensile strength is 560 MPa (81.2 ksi) vs 510 MPa (74 ksi).

Which is cheaper, A242 or X60?

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

Which welds better, A242 or X60?

X60. Its weldability rates excellent (92/100) against very good (80/100) for A242.

Ready to make it?

Upload a CAD file and FabDigit prices the part in A242 and X60 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.