1.4704
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Specification 1.4704 Datasheet, 1.4704 Chemical, 1.4704 Ring forging steelmaking, ESR Remelted, blooming, forging, rolling, heat treatment, straightened, ultrasonic test. Technical standards - DIN EN 10090 (1998), DIN 17480 (1992).
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV
TECHNICAL SPECIFICATION DATASHEET - W-Nr 1.4704
MATERIAL CATEGORY - Valve steel
MATERIAL SPECIFICATIONS - DIN EN 10090 (1998), DIN 17480 (1992)
CHEMICAL COMPOSITION (Mass weight %)
C (％): 0.40 ~ 0.50
Si (％): 3.50 ~ 4.50
Mn (％): ≤ 1.00
P (％)≤: 0.045
S (％)≤: 0.030
Cr (％): 2.50 ~ 3.00
Ni (％): -
Mo (％): -
Si (％): 3.50 ~ 4.50
Mn (％): ≤ 1.00
P (％)≤: 0.045
S (％)≤: 0.030
Cr (％): 2.50 ~ 3.00
Ni (％): -
Mo (％): -
MECHANICAL PROPERTIES HEAT TREATMENT
Hot forming temperature /℃: 1050～850
Heat treatment temperature and cooling method | annealed: 780~820
Heat treatment temperature and cooling method | quenched: 950～1000 water
Heat treatment temperature and cooling method | tempered: 700~750
Mechanical property |σb/MPa: 880～1030
Mechanical property |σs≥/MPa: 685
Mechanical property |δ5≥(％): 14
Mechanical property |ψ≥(％): 40
Mechanical property above 400℃ σb/MPa，at following temperature /℃|400: 770
Mechanical property above 400℃ σb/MPa，at following temperature /℃|500: 540
Mechanical property above 400℃ σb/MPa，at following temperature /℃|600: 260
Mechanical property above 400℃ σb/MPa，at following temperature /℃|700: 110
Mechanical property above 400℃ σb/MPa，at following temperature /℃|800: 70
Hot forming temperature /℃: 1050～850
Heat treatment temperature and cooling method | annealed: 780~820
Heat treatment temperature and cooling method | quenched: 950～1000 water
Heat treatment temperature and cooling method | tempered: 700~750
Mechanical property |σb/MPa: 880～1030
Mechanical property |σs≥/MPa: 685
Mechanical property |δ5≥(％): 14
Mechanical property |ψ≥(％): 40
Mechanical property above 400℃ σb/MPa，at following temperature /℃|400: 770
Mechanical property above 400℃ σb/MPa，at following temperature /℃|500: 540
Mechanical property above 400℃ σb/MPa，at following temperature /℃|600: 260
Mechanical property above 400℃ σb/MPa，at following temperature /℃|700: 110
Mechanical property above 400℃ σb/MPa，at following temperature /℃|800: 70
FEATURES AND CLASSIFICATIONS
Valve steel is an important sub-branch of heat resistant steels, the special material is for processing the vent valve & intake valve of combustion engines. This steel material is always under the high temperature 450 ~ 900℃ and in the operating conditions of 3000~7000kPa explosion pressure. It longly stands up to the gas-fired high temperature corrosion,scouring of gasoline,diesel and also friction from valve seats. Hence, the valve steel material must have enough heat resistance,high temperature resistance corrosivity,inoxidizability,abrasive resistance and impact resistance under the highest working temperature.
REMELTING PROCESS
Valve steel is generally smelt in electric arc furnace or induction furnace. For higher quality,it should be smelt via technology of vacuum refining and external refining.
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.
If you meet further on any technical enquiry, pleased to EMAIL our resident team of qualified production engineers, Email: sales@ccsteels.com.
PRODUCT SHAPE & DIMENSIONS
Round bar / Wire rod (Diameter): 5.5mm to 550mm
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 550mm
Square bar / Flat bar: 3mm to 800mm
Length: Fixed length or random length or based on the customer's special requirement.
Forging piece: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
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