1.7276
2015-02-09 11:12:21 Origin： Remark：0 Click：
Description 1.7276 Inventory, Suppliers 1.7276 Shaft, Bar 1.7276 Ring forgings - steelmaking, ESR, blooming, hot forging, hot rolling, heat treat, straightened, ultrasonic test, cold working, machined. We also possess advanced precision machining equipments for further processing.
Technical standards - DIN SEW 028 (1993), DIN EN 10216-2 (2004) or by agreement.
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV
RAW MATERIAL SPECIFICATION DATASHEET - Grade W-Nr 1.7276
MATERIAL CATEGORY: high temperature pressure vessel steel
MATERIAL SPECIFICATIONS: DIN SEW 028 (1993), DIN EN 10216-2 (2004)
CHEMICAL COMPOSITION (Mass weight - %)
C (％): 0.08 ~ 0.12
Si (％): 0.15 ~ 0.35
Mn (％): 0.30 ~ 0.50
P (％)≤: 0.035
S (％)≤: 0.035
Cr (％): 2.70 ~ 3.00
Mo (％): 0.20 ~ 0.30
Ni (％): —
Si (％): 0.15 ~ 0.35
Mn (％): 0.30 ~ 0.50
P (％)≤: 0.035
S (％)≤: 0.035
Cr (％): 2.70 ~ 3.00
Mo (％): 0.20 ~ 0.30
Ni (％): —
MECHANICAL PROPERTIES - UNDER ROOM TEMPERATURE
Condition: quenched and tempered
Tensile strength σb≥/MPa: 440～540
Yield strength σs≥/MPa: 215
Elongation δ5≥(%): 25.0
Impact strength, AKv ≥/J: 69
Annealed hardness HBS: 130～160
Yield strength σs≥/MPa: 215
Elongation δ5≥(%): 25.0
Impact strength, AKv ≥/J: 69
Annealed hardness HBS: 130～160
HOT WORKING AND HEAT TREATMENT CYCLE
Hot working temperature /℃: 1100～850
Annealing temperature /℃: 680～730
Quenching temperature /℃: 950～1000
Cooling medium: Oil or air quenched
Annealing temperature /℃: 680～730
Quenching temperature /℃: 950～1000
Cooling medium: Oil or air quenched
Tempering temperature /℃: 630～700
AVAILABLE SHAPES
Plate / Steel strip / Sheet / Flat bar / Shaft
Bright - milling, polishing, cold machined / finished
Plate / Steel strip / Sheet / Flat bar / Shaft
Bright - milling, polishing, cold machined / finished
PRODUCT PROFILE
Round bar / Wire rod (Diameter): 5.5mm to 800mm
Square bar / Flat bar: 3mm to 800mm
Length: Fixed length or random length or based on the customer's special requirement.
Round bar / Wire rod (Diameter): 5.5mm to 800mm
Square bar / Flat bar: 3mm to 800mm
Length: Fixed length or random length or based on the customer's special requirement.
Heavy/middle plate via hot rolled: T60 - 500mm X W60 - 1000mm X L1000 - 5000mm
Sheet steel via cold rolled: T0.5 - 6mm X W10 - 1000mm X L1000 - 2000mm
Steel strip via cold rolled: T0.1 - 3mm X W5 - 200mm X L (or in coil form)
Forging piece: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
Sheet steel via cold rolled: T0.5 - 6mm X W10 - 1000mm X L1000 - 2000mm
Steel strip via cold rolled: T0.1 - 3mm X W5 - 200mm X L (or in coil form)
Forging piece: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
PRODUCT DESCRIPTION
High room and elevated temperature strength.Good creep.
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.Good creep.
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 - heat treatment / QT
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 - heat treatment / QT
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.
Pressure vessel.
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.
Pressure vessel.
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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