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Steel A242 vs A607 Grade 50

Steel · grade comparison

Steel A242 and A607 Grade 50 are both steel grades. Both yield at about 370 MPa — strength does not separate them. A607 Grade 50 runs hotter in service (400°C vs 350°C continuous) and A607 Grade 50 conducts electricity better (9.5 % IACS vs 8.5 % IACS).

A607 Grade 50Choose it when the part sees heat.

A242 vs A607 Grade 50: properties

A242A607 Grade 50

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

200 GPa29 Msi
205 GPa29.7 Msi

Shear Modulus

79 GPa11.5 Msi
80 GPa11.6 Msi

Tensile Strength (Ultimate)

510 MPa74 ksi
490 MPa71.1 ksi

Yield Strength (0.2% offset)

370 MPa53.7 ksi
380 MPa55.1 ksi

Elongation at Break

24%
26%

Reduction in Area

50%
60%

Compressive Strength

370 MPa53.7 ksi
—

Shear Strength

320 MPa46.4 ksi
340 MPa49.3 ksi

Fatigue Strength (Endurance Limit)

245 MPa35.5 ksi
235 MPa34.1 ksi

Fracture Toughness (K_IC)

120 MPa·√m109 ksi·√in
100 MPa·√m91 ksi·√in

Charpy V-Notch Impact (RT)

55 J40.6 ft·lbf
60 J44.3 ft·lbf

Hardness, Brinell

155 HB
150 HB

Hardness, Rockwell B

82 HRB
80 HRB

Hardness, Vickers

163 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
1,425°C2,597 °F

Same in both: Density 7.85 g/cm³0.28 lb/in³ · Liquidus Temperature 1,510°C2,750 °F

Thermal

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

Thermal Conductivity

48 W/m·K27.7 BTU/hr·ft·°F
45 W/m·K26 BTU/hr·ft·°F

Specific Heat Capacity

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

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

Same in both: Min Service Temperature -30°C-22 °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).

Corrosion Resistance

35 / 100
14 / 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

58 / 100
55 / 100

Machinability Rating (AISI 1212 = 100 %)

60%
58%

Weldability

80 / 100
82 / 100

Brazeability / Solderability

40 / 100
60 / 100

Polishability

40 / 100
45 / 100

Same in both: Formability (cold) 65 / 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)

1.9 kg CO₂/kg
2.1 kg CO₂/kg

Embodied Water

40 L/kg4.8 gal/lb
50 L/kg6 gal/lb

Same in both: Typical Recycled Content 30%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

65 kN·m/kg
62 kN·m/kg

Specific Stiffness (E / density)

25.5 MN·m/kg
26.1 MN·m/kg

Modulus of Resilience

342 kJ/m³
352 kJ/m³

Thermal Diffusivity

13 mm²/s
12.1 mm²/s

Thermal Shock Resistance Index

10
9

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 scaleA242A607 Grade 50

Manufacturing and finishing

CapabilityA242A607 Grade 50
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 A607 Grade 50 — frequently asked

What is the difference between A242 and A607 Grade 50?

Steel A242 and A607 Grade 50 are both steel grades. Both yield at about 370 MPa — strength does not separate them. A607 Grade 50 runs hotter in service (400°C vs 350°C continuous) and A607 Grade 50 conducts electricity better (9.5 % IACS vs 8.5 % IACS).

Which is cheaper, A242 or A607 Grade 50?

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.

When should I choose A242 over A607 Grade 50?

Pick A607 Grade 50 when the part sees heat.

Ready to make it?

Upload a CAD file and FabDigit prices the part in A242 and A607 Grade 50 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.