57NiCrMoV7-7
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Technical specifications of 57NiCrMoV7-7 hot work tool steel - 57NiCrMoV7-7 Chemical composition, Mechanical properties from steelmaking,57NiCrMoV7-7 forging, rolling, heat treatment, cold working. We also possess advanced precision machining equipments for further processing.
Technical Standards - EN ISO 4957: 2000 , DIN 17350 (1980) or By agreement.
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV
TECHNICAL SPECIFICATION / MATERIAL GRADE: DIN 57NiCrMoV7-7 / W-Nr 1.2744
MATERIAL CATEGORY: Hot working tool steel
MATERIAL SPECIFICATIONS: EN ISO 4957: 2000 , DIN 17350 (1980)
CHEMICAL COMPOSITION (WEIGHT - %)
C(％): 0.55～0.60
Si(％): 0.15～0.35
Mn(％): 0.60～0.80
P(％)≤: 0.035
S(％)≤: 0.035
Cr(％): 0.90～1.20
Mo(％): 0.70～0.90
V(％): 0.07～0.12
Si(％): 0.15～0.35
Mn(％): 0.60～0.80
P(％)≤: 0.035
S(％)≤: 0.035
Cr(％): 0.90～1.20
Mo(％): 0.70～0.90
V(％): 0.07～0.12
Other(％): Ni 1.50～1.80
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT AND HARDNESS
Hot working tenperature ℃: 1050～850
Annealing temperature ℃: 600~700
Hardness after annealing ≤HBW: 250
Quenching temperature ℃: 890~910
Cooling medium: Oil or Air
Common tempering temperature ℃: 450~650
Hardening value after tempering at temperature /MPa |400℃: 1720
Hardening value after tempering at temperature MPa |500℃: 1570
Hardening value after tempering at temperature MPa |600℃: 1370
Hardening value after tempering at temperature MPa |650℃: 1310
Hot working tenperature ℃: 1050～850
Annealing temperature ℃: 600~700
Hardness after annealing ≤HBW: 250
Quenching temperature ℃: 890~910
Cooling medium: Oil or Air
Common tempering temperature ℃: 450~650
Hardening value after tempering at temperature /MPa |400℃: 1720
Hardening value after tempering at temperature MPa |500℃: 1570
Hardening value after tempering at temperature MPa |600℃: 1370
Hardening value after tempering at temperature MPa |650℃: 1310
MELTING PROCESS
This alloy is generally smelt in electric arc furnace (EAF ) or IFF + VD, LF + Electroslag remelting (ESR).
This alloy is generally smelt in electric arc furnace (EAF ) or IFF + VD, LF + Electroslag remelting (ESR).
For a purpose of higher quality, it should be smelt via technology of vacuum refining and external refining.
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
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
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.
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.
FEATURES AND CLASSIFICATIONS
Hot-work die divides into several main types, such as hammer forging, die forging, extrusion and die casting, including hot forging die, press machine forging die, stamping die, hot-extrusion die, metal die-casting mould. Heat distortion mould not only supports huge mechanical stress, but also thermal stress during working repeatedly. Hot-work die steel should have not only high hardness, red hardness, abrasion resistance, toughness, but also have excellent high temperature strength, thermal fatigue stability, thermal conductivity, upper hardenability for guaranteeing the whole cross section with consistent mechanical property.
Hot-work die divides into several main types, such as hammer forging, die forging, extrusion and die casting, including hot forging die, press machine forging die, stamping die, hot-extrusion die, metal die-casting mould. Heat distortion mould not only supports huge mechanical stress, but also thermal stress during working repeatedly. Hot-work die steel should have not only high hardness, red hardness, abrasion resistance, toughness, but also have excellent high temperature strength, thermal fatigue stability, thermal conductivity, upper hardenability for guaranteeing the whole cross section with consistent mechanical property.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers.
Mr Chen, Mr.Jiang - Email: lh.steel@hotmail.com
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers.
Mr Chen, Mr.Jiang - Email: lh.steel@hotmail.com
PRODUCT PROFILE
Round bar / Wire rod (Diameter1): 0.50mm 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 (Diameter1): 0.50mm 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: T6 - 200mm X W1000- 2500mm X L1000-12000mm
Sheet steel via cold rolled: T0.5 - 4mm X W600- 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.
Pipes / Tubings: OD 3-219 mm, with wall thickness ranging from 0.50 to 35 mm.
Sheet steel via cold rolled: T0.5 - 4mm X W600- 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.
Pipes / Tubings: OD 3-219 mm, with wall thickness ranging from 0.50 to 35 mm.
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