1.7707
2014-11-06 16:24:13 Origin： Remark：0 Click：
Description 1.7707 Ex-stock, Flat bars 1.7707 Inventory, Plate 1.7707 Wire rod Properties from steelmaking, Hot forging & Hot rolling, Heat treatment, Cold working. We also possess advanced precision machining equipments for further processing
TECHNICAL DATA SHEET - Grade DIN 1.7707
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT AND HARDNESS
MATERIAL CATEGORY - hardened and tempered steel
PRODUCT DESCRIPTION
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
MATERIAL SPECIFICATIONS - DIN EN 10083-2 (2006), DIN 17200 (1987)
CHEMICAL COMPOSITION (Mass weight - %)
C (％): 0.26 ~ 0.34
Si (％): ≤ 0.40
Mn (％): 0.40 ~ 0.70
P (％)≤: 0.035
S (％)≤: 0.035
Cr (％): 2.30 ~ 2.70
Mo (％): 0.15 ~ 0.25
Ni (％): ≤ 0.60
Si (％): ≤ 0.40
Mn (％): 0.40 ~ 0.70
P (％)≤: 0.035
S (％)≤: 0.035
Cr (％): 2.30 ~ 2.70
Mo (％): 0.15 ~ 0.25
Ni (％): ≤ 0.60
V (%): 0.10 ~ 0.20
Hot working temperature /℃: 1050～850
Heat treatment temperature /℃| annealing: 680～720
Heat treatment temperature /℃| annealing: 680～720
Heat treatment temperature /℃| Normalizing: 880～920
Heat treatment temperature /℃| Quenching: 860~900oil
Heat treatment temperature /℃| Tempering : 540~580
Hardness after annealing ≤HBS: 248
Heat treatment temperature /℃| Quenching: 860~900oil
Heat treatment temperature /℃| Tempering : 540~580
Hardness after annealing ≤HBS: 248
Steel dimension /mm: ≤16
Tensile strength, |σb≥/MPa: 1250 ~ 1450
Yield strength, |σs≥/MPa: 1050
Elongation, |δ5≥/(%): 9.0
Reduction of area, |ψ≥/(%): 35.0
Impact strength, |AKV≥/J: 25
Tensile strength, |σb≥/MPa: 1250 ~ 1450
Yield strength, |σs≥/MPa: 1050
Elongation, |δ5≥/(%): 9.0
Reduction of area, |ψ≥/(%): 35.0
Impact strength, |AKV≥/J: 25
Steel dimension /mm: 17 - 40
|σb≥/MPa: 980 ~ 1180
|σs≥/MPa: 785
|δ5≥/(%): 11
|σb≥/MPa: 980 ~ 1180
|σs≥/MPa: 785
|δ5≥/(%): 11
|ψ≥/(%): 45
|AKV≥/J: 41
|AKV≥/J: 41
Steel dimension /mm: 41 - 100
|σb≥/MPa: 1100 ~ 1300
|σs≥/MPa: 900
|δ5≥/(%): 10
|ψ≥/(%): 40
|AKV≥/J: 35
|σb≥/MPa: 1100 ~ 1300
|σs≥/MPa: 900
|δ5≥/(%): 10
|ψ≥/(%): 40
|AKV≥/J: 35
AVAILABLE SHAPES
Round bar / flat bar / hollow bar / strip / sheet / plate / forgings
Bright - peeled + polishing, centerless grinding
Forged - ring, tube, pipe casing, discs, shaft
PROFILE AND DIMENSIONS
Round bar / Wire rod (Diameter): 5.5mm to 550mm
Square bar / Flat bar: 3mm to 610mm
Plate / Steel strip: 0.1mm to 610mm
Width: 8mm to 1000mm
Steel sheet: thickness 0.50 ~ 6.0.0mm, width 800mm X length 1000/2000mm - Standard size
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.
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 gears, gear shaft, main axis, valve rod.
Mechanical parts - connecting rod, bolts and nuts.
Multidiameter shaft.
TECHNICAL SALES ASSISTANCE & SERVICES
If you meet further on any technical enquiry or help, pleased to email or call our resident team of qualified production engineers. E-mail: sales@ccsteels.com
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