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ASTM A231 Alloy Steel Spring Wire

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ASTM A231 Alloy Steel Spring Wire

ASTM A231 Alloy Steel Spring Wire
ASTM A231 Alloy Steel Spring Wire ASTM A231 Alloy Steel Spring Wire

Large Image :  ASTM A231 Alloy Steel Spring Wire

Product Details:
Place of Origin: China
Brand Name: Fushun
Certification: ISO9001:2008
Model Number: ASTM A231
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 A231 Alloy Steel Spring Wire

Description
Standard: ASTM A231 Feature: Alloy Steel
Form: Wires Surface Condition: Uncoated, Polished Finish, Nickel Coated Etc
Classification: Alloy Spring Steel Wire
High Light:

Fushun Alloy Steel Wire

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ASTM A231 Alloy Steel Wire

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2mm spring wire

ASTM A231 Chromium-Vanadium Alloy Steel Spring Wire

Chemical composition

C Si Mn P S Cr V
0.48 - 0.53 0.15 - 0.35 0.70 - 0.90 max 0.025 max 0.025 0.80-1.10 0.15 MIN

Supplying Size:

Diameter:0.3-20mm

 

Our Advantage

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.

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

 

A231 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.

 

A231 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.

 

Tensile Requirements

SI Units
Diameter,mm MPa, min MPa, max Reduction of Area, min, %
0.50 2060 2260 /
0.55 2050 2240 /
0.60 2030 2220 /
0.65 2010 2200 /
0.70 2000 2160 /
0.80 1980 2140 /
0.90 1960 2120 /
1.00 1940 2100 /
1.10 1920 2080 /
1.20 1900 2060 /
1.40 1860 2020 /
1.60 1820 1980 /
1.80 1800 1960 /
2.00 1780 1930 /
2.20 1750 1900 /
2.50 1720 1860 45
2.80 1680 1830 45
3.00 1660 1800 45
3.50 1620 1760 45
4.00 1580 1720 40
4.50 1560 1680 40
5.00 1520 1640 40
5.50 1480 1620 40
6.00 1460 1600 40
6.50 1440 1580 40
7.00 1420 1560 40
8.00 1400 1540 40
9.00 1380 1520 40
10.00 1360 1500 40
11.00 1340 1480 40
12.00 1320 1460 40

 

A231 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.

 

A231 Testing and inspection

Coiling test

Torsion test

heat analysis;

result of the tensile test

result of the torsion test

actual wire diameter

Tensile test

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.

 

A231 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.

 

A231 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.

 

A231 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.

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 A231 Alloy Steel Spring Wire 0

Contact Details
Hunan Fushun Metal Co., Ltd.

Contact Person: Ms. Florence Tang

Fax: 86-731-89853933

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