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Steel A53 Grade B vs P265GH

Steel · grade comparison

Steel A53 Grade B and P265GH are both steel grades. Both yield at about 300 MPa — strength does not separate them. A53 Grade B is the more ductile: elongation 30% versus 26% for P265GH. P265GH is stiffer (211 GPa vs 200 GPa). On the shop floor, A53 Grade B sits in a lower cost tier (budget, $) than P265GH (standard, $$).

A53 Grade BChoose it when the part is bent, formed or impact-loaded, or when cost is the deciding factor.

A53 Grade B vs P265GH: properties

A53 Grade BP265GH

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)

470 MPa68.2 ksi
465 MPa67.4 ksi

Yield Strength (0.2% offset)

300 MPa43.5 ksi
295 MPa42.8 ksi

Elongation at Break

30%
26%

Reduction in Area

55%
52%

Compressive Strength

300 MPa43.5 ksi
295 MPa42.8 ksi

Shear Strength

290 MPa42.1 ksi
280 MPa40.6 ksi

Fatigue Strength (Endurance Limit)

210 MPa30.5 ksi
205 MPa29.7 ksi

Fracture Toughness (K_IC)

110 MPa·√m100 ksi·√in
100 MPa·√m91 ksi·√in

Charpy V-Notch Impact (RT)

40 J29.5 ft·lbf
70 J51.6 ft·lbf

Hardness, Brinell

143 HB
140 HB

Hardness, Rockwell B

78 HRB
76 HRB

Hardness, Vickers

150 HV
147 HV

Same in both: Bulk Modulus 160 GPa23.2 Msi

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

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

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

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)

-0.65 V
-0.62 V

Corrosion Resistance

10 / 100
12 / 100

Manufacturability

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

Machinability

60 / 100
66 / 100

Machinability Rating (AISI 1212 = 100 %)

65%
63%

Weldability

92 / 100
90 / 100

Formability (cold)

75 / 100
76 / 100

Polishability

45 / 100
50 / 100

Same in both: Brazeability / Solderability 70 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Carbon (primary production)

1.9 kg CO₂/kg
2 kg CO₂/kg

Typical Recycled Content

30%
25%

Same in both: Embodied Energy (primary production) 25 MJ/kg10,748 BTU/lb · Embodied Water 40 L/kg4.8 gal/lb

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

60 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

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 scaleP265GHA53 Grade B

Manufacturing and finishing

CapabilityA53 Grade BP265GH
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.

A53 Grade B vs P265GH — frequently asked

What is the difference between A53 Grade B and P265GH?

Steel A53 Grade B and P265GH are both steel grades. Both yield at about 300 MPa — strength does not separate them. A53 Grade B is the more ductile: elongation 30% versus 26% for P265GH.

Which is cheaper, A53 Grade B or P265GH?

A53 Grade B 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 is easier to machine, A53 Grade B or P265GH?

P265GH, by a small margin. Both rate good for machinability — 66/100 against 60/100 for A53 Grade B.

Ready to make it?

Upload a CAD file and FabDigit prices the part in A53 Grade B 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.