Many types of Our Springs are used in high duty applications, such as internal combustion engines. They are subject to extreme operational speeds and temperatures, where the relaxation and fatigue properties are often crucial. As a result the choice of raw material can have a dramatic effect on ultimate performance. Accordingly, as much care is taken during the selection of raw material, as during the manufacturing process.
Supporting our versatile manufacturing program, we maintain a comprehensive stock of wire materials. Included in our on site materials inventory of over 30 tones, We stock a wide range of materials including spring steels, crome silicon,stainless steels,inconel and chrome-vanadium.
A-MIISCO uses only superior quality from the precision mills Usha Martin Industries Limited, TATA Steels, Mukand Limited, etc. The materials used are a special spring chromium-silicon (CR-SI) for wire diameters up to 8.0 mm, and special chromium-vanadium (50-CRV4) for wire diameters above 8.0 mm. This special spring steel is used exclusively because of its service life than any other wire tested. These materials ensure a defect-free function over the entire service life.
A-MIISCO provides only consistent quality certified material (according to international standards and DIN 17223/2076, DIN 17224, DIN 17225) to meet the needs of the industry for high quality and performance parts.
Following materials are available in A-MIISCO warehouse from 0.15 mm up to 110 mm dia.
1.5mm to 6mm Wire Diameter
Branded Specialist Wires
ASTM877B
0.5mm to 14mm Wire Diameter
EN10270/2 VD SiCr
DIN 17225 VDSiCr
ASTM A877
BS2803 685A55 HD2
AS33A
SWOSC-V
10.0mm to 110.0 mm Round Diameter
EN10089 1.7106 (ground & unground)
BS1429 685A55 ND2 & HD2
DIN17223/2 67SiCr5
AS33A & ASS33B
10.0mm to 110.0 mm Round Diameter
EN10089 1.8159 (ground & unground)
BS 1429 735A50 ND & HD
DIN 17225 50CrV4
ASTM A231
Are most commonly used and their tensile strength is derived by a combination of heat treatment and work hardening by wire drawing. Patented cold drawn steels have an operating temperature up to 150 degrees C and are susceptible to corrosion if not operating in a dry atmosphere:
Hard drawn wire is generally for static, lower stress applications and is usually the cheapest option.
Music wires are cold drawn high carbon steel wires. These have are higher quality wires with a high tensile. They are used in high stress applications but only available in smaller wire sizes.
0.2mm to 16mm Wire Diameter
EN10270/1 Grades SH, DM, DH
BS5216 Grades HD3, HS3, ND3, M4, M5
DIN17223/1 Grades B, C, D, II
ASTM Grades A679, A228
AS8, AS6/7, AS5, AS5A
J271, J178
G3502
These wires are generally used for their corrosion resistance and heat resistance. There are three main types of stainless steel austenitic, martensitic and precipitation hardened:
Austenitic stainless steels can only be hardened by cold work during wire drawing. This material is the most commonly used where resistance to corrosion and/or relaxation is required. They are weakly magnetic and in the spring hardened form. Working temperatures up to 300 degrees C.
Martensitic stainless steels higher strength is obtained through hardening and tempering. They possess good corrosion resistance but inferior to austenitic stainless. They are strongly magnetic and have poor electrical conductivity. Working temperature up to 300 degrees C.
Precipitation hardening stainless steels are age hardened to increase their tensile strength and are higher than austenitic stainless steels. Fatigue resistance is excellent but can be prone to occasional stress cracking. Corrosion resistance is less than austenitic stainless. Working temperatures up to 320 degrees C.
0.2mm to 16mm Wire Diameter
EN10270/3 Grade X10 CrNi 18-8, X5 CrNiMo 17-12-2, X7 CrNiAl 17-7
BS2056 Grades 301 (17/7), 302, 316
DIN 17224 1.4310, 17224 1.4401, 17224 1.4568
ASTM A313
AS35
AMS 5688, 5673C, 5678
JIS G4314
Are resistant to atmospheric corrosion, have high thermal and electrical conductivity and non-magnetic.
Brass BS2873 CZ107
Phosphor Bronze BS2873 PB102/103
Beryllium Copper BS2873 CB101
These are high corrosion and high temperature resistant materials and maximum operating temperatures range from 350 degrees C to in excess of 500 degrees C.
Inconel X750, Inconel 600, Nimonic 90, Monel 400
BS3075 Grades NA14, NA19, NA13
AMS 5699E
They are light and with high tensile strength but are prone to fatigue cracking in high dynamic applications.
Titanium Alloy 318, Bet C.