50CrV4 / 51CrV4 / AISI / DIN 1./
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EN 47 Spring Steel
CHEMICAL COMPOSITION (Typical Analysis in %)
C
Cr
Mn
V
Si
P
S
0.50-0.55
1.00-1.20
0.70-0.80
0.15-0.25
0.20-0.35
0.35max
0.35max
USA
Europe
Germany
China
Japan
France
England
ISO
Sweden
Russia
AISI / SAE
En
DIN, WNr
GB
JIS
AFNOR
BS
ISO
SS
GOST
/ G
En47 / 51CrV4
51CrV4 / 1.
55CrVA
SUP10
55CrV4
765A50
51CrV4
50HGF
Ventura Alloy and Steels Supplies and Stocks EN47 spring steel is a Chromium Vanadium type spring steel supplied in as rolled as well as spheroidize annealed condition. EN47 spring steel is appropriate for oil hardening and tempering. When used in the oil hardened and tempered condition EN47 spring steel combines spring characteristics with good wear and abrasion resistance. When hardened EN47 spring steel offers excellent durability and shock resistance which make it a proper alloy spring steel for parts exposed to stress, shock and vibration. EN47 spring steel is also known in various standards as 50CrV4 or 51CrV4 or AISI or DIN 1. spring steel in other countries.
APPLICATIONS
EN47 spring steel, highlight the advantage is great hardenability, another hot working performance, comprehensive mechanical properties, decarburization resistance is additionally great big cross section of various important spring. For example, automobile, locomotive, large plate spring, spring etc. SUP10 spring steel is mainly used for heavy vehicles, tractors, industrial production load, stress and the diameter of the larger plate spring and helical spring. It is also used widely in the motor vehicle industry and many general engineering applications. It is also suitable for applications that require high tensile strength and toughness. Typical applications include crankshafts, steering knuckles, gears, spindles and pumps.
FORGING
Forge at °C. Do not work this steel when it has fallen below 840°C.
ANNEALING
Heat slowly to 820-840°C, soak well. Cool slowly in the furnace.
( Our annealing is done in electric furnace to avoid decarburization. )
HARDENING
Pre heat gradually to 650-700°C and completely soak. Continue heating to the final hardening temperature of 830-860°C and enable the component to be heated through. Quench in oil.
TEMPERING
Temper the EN47 spring steel component immediately after quenching whilst tools are still hand warm. Re-heat to the tempering temperature then soak for one hour for every 25 millimeter of aggregate thickness (2 hours minimum) cool in air. For most applications tempering of this grade will be between 400-600°C.
Tempering°C after quenching
100
200
300
400
500
600
700
HRC
56
53
50
49
46
40
36
HEAT TREATMENT
Heat treatment temperatures, including rate of heating, cooling and soaking times etc. will vary due to factors such as the shape and size of each component. Other considerations during the heat treatment process include the type of furnace, quenching medium and workpiece transfer facilities. Please consult your heat treatment provider for full guidance on heat treatment of EN47 spring steel.
SIZE RANGE
WIRE ROD &#; ROUND &#; AS ROLLED &#; 8 MM to 32 MM DIA(If required we can also supply in spheroidize annealed condition.)
FLAT BARS &#; As Rolled and Spheroidize Annealed
SIZE
LENGTH
18 MM Dia
/ mm
20 MM Dia
mm
20 MM Dia
mm
21 MM Dia
/ mm
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22 MM Dia
mm
22 MM Dia
/ mm
/ mm
23 MM Dia
/ mm
23 MM Dia
mm
24 MM Dia
/ mm
SIZE
LENGTH
25 MM Dia
/ mm
28 MM Dia
mm
32 MM Dia
/ mm
32 MM Dia
/ mm
34 MM Dia
/ mm
36 MM Dia
/ mm
38 MM Dia
/ mm
40 MM Dia
/ mm
42 MM Dia
mm
SIZE
LENGTH
45 MM Dia
mm
45 MM Dia
mm
47 MM Dia
mm
50 MM Dia
mm
53 MM Dia
mm
56 MM Dia
mm
60 MM Dia
mm
60 MM Dia
mm
63 MM Dia
mm
SIZE
LENGTH
65 MM Dia
mm
65 MM Dia
mm
70 MM Dia
mm
70 MM Dia
mm
75 MM Dia
mm
80 MM Dia
mm
90 MM Dia
mm
100 MM Dia
mm
120 MM Dia
mm
125 MM Dia
mm
Sizes available:
20 x 20 mm
22 x 22 mm
25 x 25 mm
25 x 60 mm
28 x 28 mm
28 x 36 mm
32 x 32 mm
36 x 36 mm
36 x 45 mm
55 x 55 mm
40 x 40 mm
45 x 45 mm
45 x 55 mm
51CrV4 / 1., 58CrV4 / 1., 59CrV4 / 1. - specification and application
50HF and DIN / EN equivalent alloys are structural alloys used in the engineering industry for heavy-duty spring components and oil hardened springs.
The steel, unlike other carbon and alloy grades, is characterized by high hardness, low vulnerability to tempering, resistance for variable and heavy loads, and the ability to operate at elevated temperatures up to 300 &#;. Surface-hardened, retains excellent strength properties of the core while maintaining sufficient surface hardness.
58CrV4 / 1. and 59CrV4 / 1. are related grades with the same range of alloying additives. It is distinguished by the higher carbon content, which makes it possible to achieve even higher hardness after heat treatment.
51CrV4 / 50CrV4 / 58CrV4 / 59CrV4 grades are supplied as hot-rolled bars, drawn bars, wires, spring stripes, forgings are used for the production of heavy-duty springs, axles, crankshafts, connecting rods, compression springs, valve springs, springs, shock absorbers or spring washers.
It is mainly supplied in an annealed, softened, heat-treated and raw conditions. Steel does not exhibit corrosion resistance, so products should be protected with greases or coatings.
For more bellevile washersinformation, please contact us. We will provide professional answers.
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