J12540
2026-03-30 12:51:00 Origin： Remark：0 Click：
ASTM A356 Standard specification for heavy-walled for steam turbines J12540 heat treated round bar, plate, peeled rod J12540 stock available flat bar, industrial processing
TECHNICAL DATA SHEET - Grade 5 & UNS J12540
Material category: 0.55Cr - 0.50Mo base alloy steel
Material specifications - ASTM A356 - 2007
Special melting process: EAF + VD / EF + ESR
PRODUCT FORMS & DIMENSIONS
Rod & round bar & disc (diameter): 6.0 ~ 910 mm
Square bar & flat bar: 10 ~ 600 mm
Plate & Sheet: T1.0 ~ 320 X W 15 ~ 1200 X L mm
TYPICAL CHEMICAL COMPOSITIONS (mass fraction %)
Carbon, C (％): ≤ 0.25
Manganese, Mn (％): ≤ 0.70
Material specifications - ASTM A356 - 2007
Special melting process: EAF + VD / EF + ESR
PRODUCT FORMS & DIMENSIONS
Rod & round bar & disc (diameter): 6.0 ~ 910 mm
Square bar & flat bar: 10 ~ 600 mm
Plate & Sheet: T1.0 ~ 320 X W 15 ~ 1200 X L mm
TYPICAL CHEMICAL COMPOSITIONS (mass fraction %)
Carbon, C (％): ≤ 0.25
Manganese, Mn (％): ≤ 0.70
Silicon, Si (％): ≤ 0.60
Phosphorus, P (％): ≤ 0.035Sulfur, S (％): ≤ 0.030
Molybdenum, Mo (％): 0.40 ~ 0.60
Chromium, Cr (％): 0.40 ~ 0.70
Nickel, Ni (％): -Vanadium, V (%): -
Niobium, Nb (%): -
Ferrum, Fe (%): balance.MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT
Heat treatment temperature / ℃ | annealing: -.
Heat treatment temperature / ℃ | Normalizing: -
Heat treatment temperature / ℃ | Quenching: -
Heat treatment temperature / ℃ | Tempering : -
Hardness after annealing, ≤ HB: -
Tensile strength, Rm ≥ MPa: 485
Yield strength, Rp0.2 ≥ MPa: 275
Elongation, A5 ≥ (%): 22.0
Reduction of area, Z ≥ (%): 35.0
Impact strength, AKv ≥ J: -
Hardness after final heat treatment / HB: -
TYPICAL APPLICATIONS
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.
Mechanical parts - connecting rod, bolt and nuts.
Multi-diameter shaft, pressure vessel parts.
Power generation – turbine fasteners – boiler support rods.
Process plant – fasteners, mechanical gears, gear shaft, main axis, valve rod.
PRODUCT DESCRIPTION
J12540 is usually produced by EAF + VD + LF / BEF 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 black in the annealed condition.
Final heat treatment - normalized + tempered
quenched + tempered.
TECHNICAL SALES ASSISTANCE & SERVICE
20+ years focus on special steel manufacturing and processing.
Stock over 60 grades with a competitive price, along with cutting service for specific requirement.
Customizing special material is welcome.
We closely cooperate with the professional inspection partners to strictly control the quality and improve the quality manage system, and guarantee the goods delivery each time. It is proved that we are worth of trusting and will be the strategic partner of the supplying chains in the special steels field.
If you are interested in our products or services, pleased to EMAIL (sales@ccsteels.com) our qualified production engineers or sales department.
Raw Material Stock Available
Custom 450 / GD450 / XM-25 (S45000), 403 ESR, AISI 616 / 422 ESR, B50A365 / 403Cb+
17-4PH / 630, M-152 / 1.4938 / S151D, FV520B / S143 / 1.4594. X22CrMoV12-1
13Х11Н2B2MФ / AE961W, 11Х11Н2B2MФ / 16Х11Н2B2MФ
AISI 615 / S41800, 15-5PH / XM-12 (S15500), A-286 AISI 660 / S66286
10705BU, 10705MBU, 10705AJ, S132, S131, S111, S159, S154
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