W-Nr 1.2709
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Description 1.2709 sheet Inventory Round bar, Ex-stock 1.2709 Specifications - ISO 4597 Properties from Steel melting, ESR melted, Blooming, Hot forging / Hot rolling, Heat treatment, Straightening, 100% Ultrasonic test, Cold working or rough turned machining.
MATERIAL DATA SHEET - DIN X3NiCoMoTi18-9-5 / W-Nr 1.2709
MATERIAL CATEGORY: Cold work alloy tool steel
Cold work die includes cold punching mould, wire-drawing die, drawing die, coining die, thread rolling die, cold heading die, cold extrusion die, Based on the working condition, cold work die should have the high hardness, strength, abrasion resistance, toughness, hardenability, quenching degree, and other processing property. This kind of alloy tool steel belongs to high carbon alloy steel (carbon mass fraction is over 0.80%), Chromium is key element of alloy with mass fraction below 5% generally.
MATERIAL SPECIFICATIONS - EN ISO 4957: 2000 , DIN 17350 (1980)
PRODUCT DESCRIPTION
The alloy is usually produced by EAF /VD /LF /IFF 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 (peeling or centreless grinding) in the softened = SA condition.
Final heat treatment - heat treatment / spheroidizing annealing
AVAILABLE SHAPES
Round bar / flat bar / square bar / sheet
Bright - peeled + polishing /centerless grinding / peeled + slidabrading
Forged - ring /tube /pipe casing /discs /shaft
CHEMICAL COMPOSITION (WEIGHT %)
C (％): ≤ 0.03
Si (％): ≤ 0.10
Mn (％): ≤ 0.15
P (％)≤: 0.010
S (％)≤: 0.010
Cr (％): ≤ 0.025
Mo (％): 4.50 ~ 5.20
V (％): -
Ni (％): 17.0～19.0
Si (％): ≤ 0.10
Mn (％): ≤ 0.15
P (％)≤: 0.010
S (％)≤: 0.010
Cr (％): ≤ 0.025
Mo (％): 4.50 ~ 5.20
V (％): -
Ni (％): 17.0～19.0
Co (%): 8.50～10.0
Ti (%): 0.80～1.20
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT AND HARDNESS
Hot working tenperature /℃: 1050～850
Annealing temperature /℃: 820～850
Hardness after annealing ≤HBW: 950～1100Mpa
Annealing temperature /℃: 820～850
Hardness after annealing ≤HBW: 950～1100Mpa
Quenching temperature /℃: 480
Cooling medium: air cooling
Common tempering temperature /℃: -
Hardness after tempering at temperature HRC|100℃: -
Cooling medium: air cooling
Common tempering temperature /℃: -
Hardness after tempering at temperature HRC|100℃: -
Hardness after tempering at temperature HRC|200℃: -
Hardness after tempering at temperature HRC|300℃: -
Hardness after tempering at temperature HRC|400℃: -
Hardness after tempering at temperature HRC|300℃: -
Hardness after tempering at temperature HRC|400℃: -
HEAT TREATTMENT PRACTICE
The preheating of measuring and cutting tool steel is spheroidizing annealing, final heat treatment is quenching + low temperature tempering and hardness after heat treatment can reach 60~65HRC. When heat treat tool steel grades consideration should be given to hardening temperature, including ratio of heating, cooling and soaking times which will differ due to factors such as the shape and size of each chemical component. Other considerations during heat treatment include the type of furnace, quenching medium and work piece transfer facilities.
TYPICAL APPLICATIONS
Alloy tool steel is widely used to produce the cutting tool, cold/heat distortion mould and measuring implements, and further to manufacture the piston, valve, valve seat of fuel pump of diesel engine.
Cutting tools, Mechanical parts.
Air hammer tools, Piercing tools.
INVENTORY - hot rolled bar Diamete 150 ~ 200mm
PRODUCT PROFILE & DIMENSION
Round bar / Wire rod (Diameter): 5.5 to 550mm
Square bar / Flat bar: 10 to 800mm
Plate / Sheet steel / Steel strip: 0.5mm 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.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers - Email: sales@ccsteels.com
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