UA-61874121
Tool Steel Manufacturer, and Special Steel Stockholder
Call Us: +86-711-2390106

Cold Drawn Spring Steel Wire and Rod

Cold Drawn Spring Steel Wire and Rod Spring Steel Wire Cold Drawn Spring Steel Wire and Rod Cold Drawn Spring Steel Wire and Rod

Cold Drawn Spring Steel Wire and Rod

Description

Spring steel is a low alloy, medium carbon steel with a very high yield strength. This allows objects made of spring steel to return to their original shape after significant bending or twisting.

Application

Used for manufacture of front and rear suspension coil springs, stabilisers, various types of coil and leaf springs and a wide variety of machine parts and mechanisms

Size Ranges

Diameter: 0.10mm-30mm

All Grades Comparison

GB ASTM JIS EN DIN
55 1055 / CK55 1.1204
60 1060 / CK60 1.1211
70 1070 / CK67 1.1231
75 1075 / CK75 1.1248
85 1086 SUP3 CK85 1.1269
T10A 1095 SK4 CK101 1.1274
65Mn 1066 / / /
60Si2Mn 9260 SUP6,SUP7 61SiCr7 60SiCr7
50CrVA 6150 SUP10A 51CrV4 1.8159
55SiCrA 9254 SUP12 54SiCr6 1.7102
9255 / 55Si7 1.5026
60Si2CrA / / 60MnSiCr4 1.2826

Quality Standard

JIS G4801 2005 Spring Steels
BS EN 10089 2002 Hot rolled steels for quenched and tempered springs
ASTM A29 Standard Specification Steel Bars, Carbon and Alloy, Hot-Wrought, General Requirements

Chemical Composition(%)

Steel Grade C Mn Si P S Cr Ni B Cu Mo V
55 0.52-0.60 0.50-0.80 0.17-0.37 0.035 max 0.035 max 0.25 max 0.30 max / 0.25 max / /
65 0.62-0.70 0.50-0.80 0.17-0.37 0.035 max 0.035 max 0.25 max 0.25 max / 0.25 max / /
70 0.62-0.75 0.50-0.80 0.17-0.37 0.035 max 0.035 max 0.25 max 0.25 max / 0.25 max / /
75 0.72-0.80 0.50-0.80 0.17-0.37 0.035 max 0.035 max 0.25 max 0.30 max / 0.25 max / /
85 0.95-1.04 0.40 max 0.35 max 0.025 max 0.025 max / / / / / /
65Mn 0.62-0.70 0.90-1.20 0.17-0.37 0.035 max 0.035 max 0.25 max 0.25 max / 0.25 max / /
60Si2Mn 0.56-0.64 0.70-1.00 1.50-2.00 0.035 max 0.035 max 0.35 max 0.25 max / 0.25 max / /
50CrVA 0.46-0.54 0.50-0.80 0.17-0.37 0.025 max 0.025 max 0.80-1.10 0.35 max / 0.25 max / 0.10-0.20
55SiCrA 0.51-0.59 0.50-0.80 1.20-1.60 0.025 max 0.025 max 0.50-0.80 0.35 max / 0.25 max / /
60Si2CrA 0.56-0.64 0.40-0.70 1.40-1.80 0.025 max 0.025 max 0.70-1.00 0.35 max / 0.25 max / /

Mechanical Properties(Quenched and Tempered Condition)(T=20°C if not differently stated)

Steel Grade Tensile Strength Rm (Mpa) Yield Strength Rp0.2 (Mpa) Elongation A5 (%) Area Reduction Ratio C (%)
65 980 min 785 min 9 min 35 min
70 1030 min 835 min 8 min 30 min
85 1130 min 980 min 6 min 30 min
65Mn 980 min 785 min 8 min 30 min
60Si2Mn 1275 min 1180 min 5 min 25 min
50CrVA 1275 min 1130 min 10 min 40 min
55SiCrA 1450-1750 1300 min 6 min 25 min
60Si2CrA 1765 min 1570 min 6 min 20 min

Delivery Conditions

Cold Drawn only
Cold Drawn+Soft Annealed
Cold Drawn+Hardened+Tempered

Surface Conditions

Smooth
Peeled
Polished
Blasted

Heat Treatment

Steel Grade Quenching Temperature (°C) ( Media Tempering Temperature (°C)
65 840 oil 500
70 830 oil 480
85 820 oil 480
65Mn 830 oil 540
60Si2Mn 870 oil 480
50CrVA 850 oil 500
55SiCrA 860 oil 450
60Si2CrA 870 oil 420

Mill′s test certificate:

EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.