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Steel A372 Grade A vs P265GH

Steel · grade comparison

Steel A372 Grade A and P265GH are both steel grades. A372 Grade A is the stronger of the two: tensile strength 530 MPa (76.9 ksi) against 465 MPa (67.4 ksi) for P265GH, about 14% more. A372 Grade A is harder — 155 HB against 140 HB for P265GH — which matters for wear surfaces and threads. P265GH is stiffer (211 GPa vs 200 GPa). On the shop floor, P265GH welds better (excellent vs very good), P265GH forms better (very good vs good), and A372 Grade A sits in a lower cost tier (budget, $) than P265GH (standard, $$).

A372 Grade AChoose it when strength drives the design, or when surface hardness matters.

P265GHChoose it when it will be welded.

A372 Grade A vs P265GH: properties

A372 Grade AP265GH

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

200 GPa29 Msi
211 GPa30.6 Msi

Shear Modulus

79 GPa11.5 Msi
81 GPa11.7 Msi

Poisson's Ratio

0.29
0.3

Tensile Strength (Ultimate)

530 MPa76.9 ksi
465 MPa67.4 ksi

Yield Strength (0.2% offset)

300 MPa43.5 ksi
295 MPa42.8 ksi

Reduction in Area

50%
52%

Compressive Strength

300 MPa43.5 ksi
295 MPa42.8 ksi

Shear Strength

330 MPa47.9 ksi
280 MPa40.6 ksi

Fatigue Strength (Endurance Limit)

230 MPa33.4 ksi
205 MPa29.7 ksi

Fracture Toughness (K_IC)

85 MPa·√m77.4 ksi·√in
100 MPa·√m91 ksi·√in

Charpy V-Notch Impact (RT)

45 J33.2 ft·lbf
70 J51.6 ft·lbf

Hardness, Brinell

155 HB
140 HB

Hardness, Rockwell B

82 HRB
76 HRB

Hardness, Vickers

162 HV
147 HV

Same in both: Bulk Modulus 160 GPa23.2 Msi · Elongation at Break 26%

Physical

Density and transition temperatures.

Melting Point (Solidus)

1,425°C2,597 °F
1,495°C2,723 °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.

Specific Heat Capacity

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

Latent Heat of Fusion

250 J/g107 BTU/lb
270 J/g116 BTU/lb

Max Service Temperature (continuous)

425°C797 °F
400°C752 °F

Min Service Temperature

-29°C-20 °F
-10°C14 °F

Same in both: Thermal Conductivity 50 W/m·K28.9 BTU/hr·ft·°F · Thermal Expansion (CTE, 20–100 °C) 12 µm/m·K6.7 µin/in·°F

Electrical

Conductivity and insulation.

Same in both: Electrical Conductivity 10 % IACS · Electrical Resistivity 1.7×10⁻⁷ Ω·m6.69 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.61 V
-0.62 V

Same in both: Corrosion Resistance 12 / 100

Manufacturability

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

Machinability

62 / 100
66 / 100

Machinability Rating (AISI 1212 = 100 %)

62%
63%

Weldability

75 / 100
90 / 100

Formability (cold)

60 / 100
76 / 100

Castability

50 / 100
—

Brazeability / Solderability

65 / 100
70 / 100

Polishability

55 / 100
50 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

26 MJ/kg11,178 BTU/lb
25 MJ/kg10,748 BTU/lb

Embodied Water

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

Typical Recycled Content

30%
25%

Same in both: Embodied Carbon (primary production) 2 kg CO₂/kg

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

68 kN·m/kg
59 kN·m/kg

Specific Stiffness (E / density)

25.5 MN·m/kg
26.9 MN·m/kg

Modulus of Resilience

225 kJ/m³
206 kJ/m³

Thermal Diffusivity

13.6 mm²/s
13.8 mm²/s

Thermal Shock Resistance Index

11
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 scaleP265GHA372 Grade A

Manufacturing and finishing

CapabilityA372 Grade AP265GH
CNC machining—Yes
Sheet metal—Yes
Default condition—HR
Relative cost$ Budget$$ Standard
Min. machined wall—0.8 mm
Best machined surface—Ra 1.6 µm
AlCrN—Yes
AlTiN—Yes
Black Oxide—Yes
CVD Al2O3—Yes
CVD TiCN—Yes
CVD TiN—Yes
Cerakote—Yes
Chrome Plating—Yes
CrN—Yes
DLC—Yes
E-Coating—Yes
HVOF Coating—Yes
Hot-Dip Galvanizing—Yes
MoS2—Yes
Multilayer CVD—Yes
Nickel Plating—Yes
PTFE Coating—Yes
Painting—Yes

They share 9 finishes: Copper Plating, Electroless Nickel (EN), Epoxy Coating, Gold Plating, Hard Chrome Plating, Manganese Phosphate, Plasma Spray, Silver Plating, Zinc Phosphate.

A372 Grade A vs P265GH — frequently asked

Is A372 Grade A stronger than P265GH?

Yes. A372 Grade A has a typical tensile strength of 530 MPa (76.9 ksi) against 465 MPa (67.4 ksi) for P265GH — about 14% more.

Which is cheaper, A372 Grade A or P265GH?

A372 Grade A is the lower-cost material: it sits in the budget tier ($) while P265GH 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, A372 Grade A or P265GH?

P265GH. Its weldability rates excellent (90/100) against very good (75/100) for A372 Grade A.

Ready to make it?

Upload a CAD file and FabDigit prices the part in A372 Grade A and P265GH 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.