DIN 40CrMnMoS8-6 & W-Nr 1.2312 - DATA SHEET
MATERIAL CATEGORY: Cold work alloy tool steel
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
PRODUCT DESCRIPTION
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 softened condition.
Final heat treatment - heat treatment / QT
MATERIAL SPECIFICATIONS
EN ISO 4957: 2000 , DIN 17350 (1980)
AVAILABLE SHAPES
Black bar /Flat bar /Square bar
Bright - peeled + polishing /centerless grinding / peeled + slidabrading
Forged - ring /tube /pipe casing /discs /shaft
CHEMICAL COMPOSITION (WEIGHT %)
C (％): 0.35 ~ 0.45
Si (％): 0.30 ~ 0.50
Mn (％): 1.40 ~ 1.60
P (％)≤: 0.030
S (％)≤: 0.05 ~ 0.10
Cr (％): 1.80 ~ 2.00
Mo (％): 0.15 ~ 0.25
V (％): — MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT AND HARDNESS
Hot working tenperature /℃: 1050～850
Annealing temperature /℃: 760～780
Hardness after annealing ≤HBW: 230
Quenching temperature /℃: 830～870
Cooling medium: oil /400℃heating bath
Common tempering temperature /℃: 640~680
Hardness after tempering at temperature HRC|100℃: 51
Hardness after tempering at temperature HRC|200℃: 50
Hardness after tempering at temperature HRC|300℃: 48
Hardness after tempering at temperature HRC|400℃: 45
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry. pleased to email or call our resident team of qualified production engineers.
Round bar / Wire rod (Diameter): 0.50mm to 700mm
Square bar / Flat bar: 3mm to 800mm
Plate / Sheet steel / Steel strip: 0.5mm to 1200mm
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.
Pipes / Tubings: OD 3-219 mm, with wall thickness ranging from 0.50 to 35 mm.
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