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ASTM A877 Alloy Valve Spring Steel Wire

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ASTM A877 Alloy Valve Spring Steel Wire

ASTM A877 Alloy Valve Spring Steel Wire
ASTM A877 Alloy Valve Spring Steel Wire ASTM A877 Alloy Valve Spring Steel Wire

Large Image :  ASTM A877 Alloy Valve Spring Steel Wire

Product Details:
Place of Origin: China
Brand Name: Fushun
Certification: ISO9001:2008
Model Number: ASTM A877
Payment & Shipping Terms:
Minimum Order Quantity: Negotiable
Price: Negotiable
Packaging Details: nylon/pallet/case
Delivery Time: 15-30 days
Payment Terms: L/C, T/T, Western Union
Supply Ability: 40,000tons/year

ASTM A877 Alloy Valve Spring Steel Wire

Description
Standard: ASTM A877 Feature: Alloy Steel
Form: Wires Surface Condition: Uncoated, Polished Finish, Nickel Coated Etc
Classification: Alloy Spring Steel Wire
High Light:

Annealed Chrome Silicon Spring Wire

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20mm Chrome Silicon Spring Wire

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ASTM A877 Wire

ASTM A877 Chromium-Silicon Chrome-Silicon-Vanadium Alloy Valve Spring Quality Steel Wire

A877 Alloy Spring Steel Wire Chemical composition

Grade C Si Mn P S Cr V Mo
A 0.51-0.59 1.20-1.60 0.50 - 0.80 max 0.025 max 0.025 0.6-0.80 / /
B 0.55-0.70 1.20-1.65 0.50 - 0.80 max 0.025 max 0.025 0.5-0.80 0.08-0.25 /
C 0.55-0.70 1.80-2.20 0.70-1.00 max 0.025 max 0.025 0.85-1.05 0.05-0.15 /
D 0.55-0.70 1.80-2.20 0.30-0.60 max 0.025 max 0.025 1.80-1.00 0.05-0.15 0.05-0.15

 

A877 Alloy Spring Steel Wire Supplying Size:

Diameter: 0.3-20mm

A877 Alloy Spring Steel Wire Dimensional tolerances

Wire in coils

The tolerances level for the wire diameter is based on EN 10218-2:1996 level:

-T5 for wire diameter up to and including 0,80 mm;

-T4 for 0,80 mm up to 10,00 mm;

-T3 above 10,00 mm.

Wire in cut lengths

The requirements for length tolerances and straightness are as in EN 10218-2:1996. The tolerance on the nominal length shall only be in plus keeping the same tolerance range

 

Our Advantage on Spring steel wire:

1. Stable linearity, good formability. Uniform and beautiful surface condition.

2. High plasticity and good fatigue resistance. And we provide Self-Inspection Reports and Raw-Material Test Certificates.

3. Professional anti-rust protective packaging. On time delivery, competitive price.

4. Large stock available, no MOQ requirement.

 

A877 Alloy Spring Steel Wire Tensile and % R.A. Requirements

Grade A (Chrome Silicon)
SI Units
Diameter, mm MPa, min MPa, max Min % R.A.
0.5 2100 2280 • • •
1.0 2070 2240 • • •
1.5 2030 2210 • • •
2.0 2000 2140 45
3.0 1930 2070 45
3.75 1900 2030 40
4.5 1830 1970 40
5.0 1810 1950 40
5.7 1800 1930 40
6.3 1760 1900 40
7.9 1730 1860 40
9.5 1690 1830 40
Inch-Pound Units
Diameter, in. ksi, min ksi, max Min % R.A.*
0.020 305 330 • • •
0.040 300 325 • • •
0.060 295 320 • • •
0.080 290 310 45
0.120 280 300 45
0.148 275 295 40
0.177 265 285 40
0.200 263 283 40
0.225 260 280 40
0.250 255 275 40
0.312 250 270 40
0.375 245 265 40
Grade B (Chrome Silicon Vanadium)
SI Units
Diameter, mm MPa, min MPa, max Min % R.A.
0.5 2200 2380 • • •
1.0 2170 2340 • • •
1.5 2140 2300 • • •
2.0 2100 2240 40
3.0 2070 2200 40
3.75 2030 2170 35
4.5 2000 2140 35
5.0 1970 2100 35
5.7 1930 2070 35
6.3 1900 2030 35
7.9 1860 2000 35
9.5 1830 1970 35
Inch-Pound Units
Diameter, in. ksi, min ksi, max Min % R.A.
0.020 320 345 • • •
0.040 315 340 • • •
0.060 310 335 • • •
0.080 305 325 40
0.120 300 320 40
0.148 295 315 35
0.177 290 310 35
0.200 285 305 35
0.225 280 300 35
0.250 275 295 35
0.312 270 290 35
0.375 265 285 35

 

A877 Alloy Spring Steel Wire Surface finish

The wire shall be protected against corrosion and mechanical damage. Unless otherwise specified the wire shall be delivered in slightly oiled condition.

 

A877 Non metallic inclusions

The VD grades shall be checked for maximum size of inclusion according to ENV 10247. The allowable level of inclusions shall be agreed between the parties at the enquiry and order.

 

A877 Form of delivery

Alloy wire shall be supplied in coils, on spools or in cut lengths. The wire in coils or on spools shall form one continuous length. Wire in coil may also be supplied on carriers containing one or more coils.

 

For VD and TD grades no welds are permitted after the heat treatments preceding the final drawing operation; for 'FD' grades no welds shall be made at finished size unless agreed otherwise between the parties.

 

The supplied wire units shall be tightly bound to ensure that wire spiral waps do not spring out unforeseen. The starting end shall be marked and at the coil ends the wire shall be covered with a protective cap.

 

A877 Alloy Spring Steel Wire Surface quality

The surface of the wire shall be smooth and permissible depth of surface defects at the coil ends shall be in accordance with Table.

By in-line control of surface defects the areas of the coil with defects above the level of Table 7 shall be marked. In-line testing is not performed for FD-grades.

The number of defective parts that can be tolerated may be agreed between the parties.

 

Alloy Spring Steel Wire that is heat treated in line in the following way: it is first transformed into austenite, quenched in oil or similar quenching medium, followed immediately by tempering by heating to the appropriate temperature.

 

Alloy Spring Steel Wire made from unalloyed or alloyed steels. They are primarily subject to torsional stresses such as in compression and extension springs and in special cases also for applications where the spring wire is subject to bending stresses such as lever springs. As a rule unalloyed steels are used for applications at room temperature whereas alloyed steels are generally used at a temperature above room temperature. Alloyed steels may also be chosen for above average tensile strengths.

 

A877 Alloy Spring Steel Wire Classification

The grade for normal applications made from unalloyed or alloyed steel has the abbreviation FD and is intended for static applications.

Spring steel wire for medium fatigue levels, such as required for some clutch springs from unailoyed or alloyed steel, has the abbreviation TD.

Spring steel wire from unalloyed steel or alloyed steel intended for use under severe dynamic duty such as for valve springs or other springs with similar requirements has the abbreviation VD.

Medium and high fatigue grades TD and VD are characterized by high steel cleanliness, specific chemical, mechanical and technological parameters and a well defined surface condition in relation to the allowable depth of surface defects and decarburization.

The static grade FD is characterized by its chemical, mechanical and technological characteristics as well as by a specified surface condition concerning surface defects and decarburization.

 

A877 Surface decarburization

The wire grades according to this standard shall be free from total decarburization. The maximum depths of the partially decarburized zone shall be checked at the end of the coils.

 

A877 Testing and inspection

Coiling test

Torsion test

heat analysis;

result of the tensile test

result of the torsion test

actual wire diameter

Tensile test

 

Information to be supplied by the purchaser

The purchaser shall clearly state in his enquiry or order the product and following information :

a)the desired quantity;

b)the number of this European Standard: EN 10270-2;

c)wire grade

d)the nominal wire diameter;

e)the form of delivery and unit mass;

f)the type of inspection document;

g)any particular agreement made.

ASTM A877 Alloy Valve Spring Steel Wire 0

Contact Details
Hunan Fushun Metal Co., Ltd.

Contact Person: Ms. Florence Tang

Fax: 86-731-89853933

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