X9940
2016-03-31 14:18:36 Origin： Remark：0 Click：
X9940 (EN 26) is a high carbon 2.5% Nickel - Chromium - Molybdenum High tensile Steel, Round bar 1.6745 Flat bar, and forgings Steelmaking, ESR melted, Hot forging/rolling, Heat treatment, 100% Ultrasonic test.
TECHNICAL SPECIFICATIONS - Grade X9940 & 1.6745
Official Test Certificate Report: issued by TUV - SGS - BV
MATERIAL CATEGORY: 1380MPa High tensile steel
TYPE OF STEEL: 2.5%Ni - 0.65% Cr - 0.55%Mo Base steel
MAIN CHEMICAL COMPOSITION (mass weight %)
C (%): 0.36 ~ 0.44
Si (%): 0.10 ~ 0.40
Mn (%): 0.45 ~ 0.70
Ni (%): 2.30 ~ 2.80
Cr (%): 0.50 ~ 0.80
Mo (%): 0.45 ~ 0.65
P (%): 0.035 max
S (%): 0.020 max
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Condition: Heat treatment
Tensile strength σb≥/MPa: 1180 ~ 1400
Yield strength σs≥/MPa: 1000
Elongation δ5≥(%): 9.0
Yield strength σs≥/MPa: 1000
Elongation δ5≥(%): 9.0
Impact, AKV≥/J: 28
Hardness HBS: 363 min.
Hardness HBS: 363 min.
PRODUCT DESCRIPTION
High room and elevated temperature strength. High notch tolerance.
Thermal expansion coefficients compatible with low alloy steel turbine casing materials.
Lower design and operating risks
Simplified design for bolting configuration compared with martensitic steels or high nickel alloys.
High room and elevated temperature strength. High notch tolerance.
Thermal expansion coefficients compatible with low alloy steel turbine casing materials.
Lower design and operating risks
Simplified design for bolting configuration compared with martensitic steels or high nickel alloys.
Proven performance in long-term service.
Extensive database of long term, high temperature test results.
Extensive database of long term, high temperature test results.
Alloy structural steel is provided with higher yield strength, tensile strength, endurance strength, yield ratio (about 0.85 generally ) enough plasticity and toughness.
The concentration of alloy element of this kind of steel is quite high, mainly are corrosion resistant steel, heat resistant steel, wear resistant steel, and other special steels of physical and chemical properties. Alloy structural steel has preferable mechanical property than that of carbon structural steel, high performance of heat treatment especially.
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 annealed condition, or bright annealing specially.
Final heat treatment - Q + T.
The concentration of alloy element of this kind of steel is quite high, mainly are corrosion resistant steel, heat resistant steel, wear resistant steel, and other special steels of physical and chemical properties. Alloy structural steel has preferable mechanical property than that of carbon structural steel, high performance of heat treatment especially.
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 annealed condition, or bright annealing specially.
Final heat treatment - Q + T.
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.
Power generation – turbine fasteners – boiler support rods
Process plant – fasteners, Mechanical gears, gear shaft, main axis, valve rod.
Mechanical parts - connecting rod, bolt and nut, Multidiameter 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.
Power generation – turbine fasteners – boiler support rods
Process plant – fasteners, Mechanical gears, gear shaft, main axis, valve rod.
Mechanical parts - connecting rod, bolt and nut, Multidiameter shaft.
PRODUCT PROFILE & DIMENSIONS
Round bar / Wire rod (Diameter): 5.5mm to 550mm
Square bar / Flat bar: 10mm to 800mm
Length: Fixed length or random length or based on the customer's special requirement.
Round bar / Wire rod (Diameter): 5.5mm to 550mm
Square bar / Flat bar: 10mm to 800mm
Length: Fixed length or random length or based on the customer's special requirement.
Heavy/middle plate via hot rolled: T60 - 450mm X W60 ~ 1000mm X L1000 ~ 4000mm
Sheet steel via cold rolled: T1.0 - 3mm X W100 - 1000mm X L1000 - 2000mm
Steel strip via cold rolled: T0.5 - 3mm X W10 - 200mm X L (or in coil form)
Forging piece: stepped shafts, other different shapes based on OEM.
Sheet steel via cold rolled: T1.0 - 3mm X W100 - 1000mm X L1000 - 2000mm
Steel strip via cold rolled: T0.5 - 3mm X W10 - 200mm X L (or in coil form)
Forging piece: stepped shafts, other different shapes based on OEM.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry, pleased to EMAIL our resident team of qualified production Engineers. E-mail: sales@ccsteels.com.
If you meet further on any technical enquiry, pleased to EMAIL our resident team of qualified production Engineers. E-mail: sales@ccsteels.com.
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