P250GH datasheet,P250GH chemical,P250GH heat treatment

P250GH
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P250GH Steels Ex-stock, Alloy P250GH Suppliers,Properties P250GH Forging Bar Plate,DIN P250GH Technical specifications Melting, ESR & VAR technique, Blooming, Hot forging, Hot rolling, Heat treatment, Straightening, Ultrasonic flaw detection test.
DIN P250GH - MATERIAL DATA SHEET
MATERIAL CATEGORY
High temperature structural steel 
TYPICAL APPLICATIONS
Mechanical gears, gear shaft, main axis, valve rod
Mechanical parts - connecting rod, bolt and nut
Multidiameter shaft
Pressure vessel, seamless pipe
PRODUCT DESCRIPTION
The alloy is usually produced by EAF /VD /LF followed by electroslag refining (ESR) if necessary for special purpose.
Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different level according to the buyers' requirements.
Bars are usually supplied bright in the softened condition.
Final heat treatment - heat treatment / QT 
MATERIAL SPECIFICATIONS  
DIN EN 10028-2 (2003), DIN 17755 (1983) 
AVAILABLE SHAPES  
Black bar /Flat bar / Square bar /Pipe, /Steel strip, /sheet
Bright - peeled + polishing, centerless grinding
Forged - ring, tube, pipe casing, discs, shaft
Alloy structural steels are widely used in the filed of ship, vehicle, airplane, guided missile, weapons, railway, bridges, pressure vessel, machine tools, mechanical components with a bigger sectional size and so on. 
CHEMICAL COMPOSITION (WEIGHT %)
C (%):     0.18 ~ 0.23
Si (%):    ≤ 0.40
Mn (%):   0.30 ~ 0.90
P (%)≤:   0.025
S (%)≤:   0.015
Cr (%):   -
Mo (%):  -
Ni (%):    -
Other(%):  Cu ≤0.30;Al ≤0.020;Nb ≤0.01;Ti ≤0.03;V ≤0.02
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT AND HARDNESS
Hot working temperature /℃:    1100~850
Heat treatment temperature /℃|annealing / normalizing :    890~950
Heat treatment temperature /℃|quenching:    —
Heat treatment temperature /℃|tempering:    —
HBS:    120~160
(≥)|σb/MPa:    410~540
(≥)|σs/MPa:    240
(≥)|δ5(%):    25
(≥)|AKV/J:    44    
MECHANICAL PROPERTY UNDER HIGH TEMPERATURE
Yield strength σ0.2≥/MPa|200℃:    185
Yield strength σ0.2≥/MPa|300℃:    145
Yield strength σ0.2≥/MPa|350℃:    125
Yield strength σ0.2≥/MPa|400℃:    100
Yield strength σ0.2≥/MPa|450℃:    80
Yield strength σ0.2≥/MPa|500℃:    —  
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry. pleased to email or call our resident team of qualified production engineers. Email: sales@ccsteels.com
PRODUCT PROFILE  
Round bar / Wire rod (Diameter): 5.5mm to 800mm
Square bar / Flat bar: 10mm to 1000mm
Plate / Sheet steel / Steel strip: 0.1mm to 1000mm
Width: 8mm to 1000mm
Length: random length or based on the customer's special requirement.
Forged steel shape: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
Pipes / Tubings: OD 3-219 mm, with wall thickness ranging from 0.50 to 35 mm. 

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