P265GH

Standard non-alloyed steel for pressure vessels and boilers to 450 C. Base plate for heat exchanger fabrication.

Pressure Vessel Steels Pressure Vessel Steel EN 10028-2P265GH / 1.0425 ASTMA516 Gr60 (nearest) ASMESA-516 Gr60 JISSPV235 +3
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Description

P265GH per EN 10028-2. GH suffix indicates elevated temperature suitability. Base grade of EN pressure vessel steel series. Used for boiler drums, heat exchanger shells, pressure vessels and process plant piping to 450 C continuous service.

Key Properties — Normalized t<=16mm
Rm (Tensile Strength)
410 – 530
MPa
Re / Rp0.2 (Yield)
265
MPa
A₅ (Elongation)
≥ 23.0
%
E (Young's Modulus)
210
GPa
Density
7.85
g/cm³
Main Designations (7)
Standard BodyDesignationCountry / RegionNote
EN 10028-2 P265GH / 1.0425 EU
ASTM A516 Gr60 (nearest) USA
ASME SA-516 Gr60 USA
JIS SPV235 Japan
GOST 09G2S (nearest) Russia
GB Q245R China
JUS C.0452 Yugoslavia Kotlarski celik; JUS B.B3.010
Standards (7)
#Standard BodyDesignationCountry / RegionNote
1 EN 10028-2 P265GH / 1.0425 EU —
2 ASTM A516 Gr60 (nearest) USA —
3 ASME SA-516 Gr60 USA —
4 JIS SPV235 Japan —
5 GOST 09G2S (nearest) Russia —
6 GB Q245R China —
7 JUS C.0452 Yugoslavia Kotlarski celik; JUS B.B3.010
All values in wt.%
C
Carbon
≤ 0.2000
Si
Silicon
0.1000 – 0.4000
Mn
Manganese
0.8000 – 1.4000
ElementSymbolMin %Max %Typical %
Carbon C — 0.2000 0.1600
Silicon Si 0.1000 0.4000 0.2500
Manganese Mn 0.8000 1.4000 1.1000
Mechanical Properties
ConditionCode Rm min
MPa
Rm max
MPa
Re min
MPa
Re max
MPa
A₅ min
%
Z
%
KV
J
HB minHB max HRC minHRC max E
GPa
Normalized t<=16mm +N 410 530 265 — 23.0 — — — — — — 210.0
Normalized t<=40mm +N 410 530 255 — 23.0 — — — — — — 210.0
Physical Properties
Density
7.850
g/cm³
Melting Point
1492–1528
°C
Young's Modulus
210.0
GPa
Poisson's Ratio
0.300
—
Thermal Conductivity
50.0
W/m·K
Thermal Expansion
12.00
×10⁻⁶ /K
Specific Heat
490
J/kg·K
Electrical Resistivity
0.1950
µΩ·m
Magnetic
Yes
 
Heat Treatment
Normalizing
Temperature:880°C – 940°C
Medium:Still Air
Duration:-
Cooling:Air cool
Hardness After:Fine grain
Delivery condition.
PWHT after welding
Temperature:580°C – 640°C
Medium:Furnace
Duration:1h/25mm
Cooling:<=200C/h
Hardness After:No change
Mandatory per EN 13445 for t>8mm.
Machinability
Machinability Rating
relative to AISI B1112 = 100%
62.0%
Moderate
Turning Speed (HSS)
38
m/min
Turning Speed (Carbide)
162
m/min
Feed Rate (Turning)
0.190
mm/rev
Drilling Speed (HSS)
26
m/min
Milling Speed (Carbide)
165
m/min
CoolantSoluble oil 5-8%
Chip FormationMedium chips
Tool MaterialCarbide P20; HSS M2
Surface FinishRa 1.6-3.2 um
Good machinability, similar to S275.
Applications
Boilers
Steam boiler drums, steam headers and economiser shells.
Pressure Vessels
Unfired pressure vessel shells and dished ends per EN 13445.
Heat Exchangers
Shell-and-tube heat exchanger shells for service to 350 C.
Technical Notes
✅
P265GH vs P355GH
P265GH: to 350 C. P355GH: Rm 490 MPa, to 400 C. Use P355GH when wall thickness reduction matters.