Mechanical Spring Wire

Overview

Mechanical Spring Wire

InfraBuild Wire manufactures a wide range of spring wires for a multitude of applications. The majority of products are made to conform to AS1472 – Carbon Steel Spring Wire for Mechanical Springs, but may also be produced to comply with overseas standards or customer specifications. Typical applications include use in the automotive industry, wire brushes, trampolines and garage door springs. 

Mechanical Spring Wire is manufactured as either bright (hard drawn) or drawn galvanized wire. Careful selection of steel feed grades, correct heat treatment of the feed and subsequent cold drawing to finished size under controlled conditions combine to produce wire capable of withstanding the deformation and operational stresses inherent in spring manufacture and use.

Mechanical Spring Wire Specifications

The specifications listed below are in accordance with AS1472 and are indicative only of the products offered by InfraBuild Wire.

Diameter Tolerances

Nominal DiameterToleranceOvality (max)
Above 1.00mm up to & incl. 4.00mm+/- 0.03mm0.03mm
Above 4.00mm up to & incl. 7.10mm+/- 0.04mm0.04mm
Above 7.10mm up to & incl. 10.00mm+/- 0.05mm0.05mm
Above 10.00mm up to & incl. 11.20mm+/- 0.06mm0.06mm

Tensile Stength (MPa)

Tensile strength is defined as the maximum load achieved in the tensile test, divided by the cross-sectional area of the wire test piece.

Hard Drawn Spring Wire

Nominal Diameter mmTensile Strength MPa





Range 1Range 2Range 3



MinMaxMinMaxMinMax
0.8187021602130240023702680
0.9184021302100237023402640
1180020702040231022802570
1.12177020402010227022402530
1.25173020001970223022002480
1.4170019601930218021502430
1.6167019201890213021002370
1.8163018801850208020502320
2160018401810204020102270
2.24156018001770200019702230
2.5153017601730195019202170
2.8150017201690191018802120
3.15146016801650187018402080
3.55145016701640185018202060
4141016301600181017802010
4.5137015901560176017301960
5135015601530173017001920
5.6132015201490168016501860
6.3129014901460165016201830
7.1126014601430162015901790
8123014201390157015401740
9119013801350153015001700
10118013601330151014801670
11.2117013401310148014501640

Drawn Metallic Coated (Galvanized) Spring Wire

Nominal Diameter mmTensile Strength MPa



Range 1Range 2


MinMaxMinMax
0.81780208020202320
0.91750205019902290
11710201019402240
1.121680198019102210
1.251640194018702, 170
1.41610191018302130
1.61590189017902090
1.81550185017602060
21520182017202020
2.241480178016801980
2.5145017501601940
2.814201720160001900
3.151390168015701870
3.55138016701560180
41340163015201810
4.51300159014801760
51280156014501730

Steel Chemistry

ElementCast Analysis %

MinMax
Carbon0.450.85
Silicon0.10.55
Manganese0.41.1
Chromium-0.3
Vanadium-0.15
Phosphorus-0.03
Sulphur-0.03

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