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High carbon steel WIRE

HARD STEEL WIRE

Amic has been a specialist in hard steel wire for springs (high carbon steel) and piano wire since 1950. We supply our customers according to EN 10270-1 and DIN 17223:1964-1. The hardness of steels depends mainly on their carbon content, the higher the carbon content the harder the steel. Hard steels have a higher carbon content than soft steels, usually above 0.35% and below 1.00%. They are particularly suitable for the manufacture of springs.

Amic offers a wide range of round and square spring steel wire:

SH wire, SM wire, SL wire
DH wire, DM wire
Class II G1 wire
51CRV4 wire

 

HARD STEEL WIRE COATINGS AND PIANO WIRE

High carbon steels have a low resistance to corrosion, which is why we offer you solutions adapted to your conditions of use.

For our spring wires, several coatings are available:

Clear/phosphate P: the wire surface is covered with phosphate crystals before drawing.
Galvanised Zn: Galvanising gives the wire a corrosion protection and a matt appearance. The steel wire is passed through a molten zinc bath. Special care must be taken when shaping galvanised wires so as not to compromise their corrosion resistance.
Zinc-Aluminium ZnAl (Galfan®, Bezinal®): provides excellent corrosion protection and allows for quality forming, better than a standard galvanised coating. Galfan®, Bezinal® wires have a smoother, more durable surface and a matt grey appearance.
Sn Tinned: Tinning covers the wire with a layer of tin. It protects the wire from corrosion and provides better electrical conductivity and solderability. Bright surface appearance.

For better corrosion resistance, Amic recommends the use of its stainless spring steels

HARD STEEL BARS & RODS SPRINGS

Amic has over 70 years of experience in straightening and cutting to length wire. Our wire straightening machines and our know-how are unique in Europe. They enable us to manufacture customised steel bars and rods quickly and efficiently.

Our range is made from wires from :

5 mm to 6 m in length
and from 0.28 to 18 mm in diameter

We manufacture individually or in small, medium and large series. Amic supplies metal bars for a wide range of industries: aeronautics, automotive, wine-making, etc. After straightening and cutting, it is known that the tensile strength can be reduced by up to 10%.

 

 

Chemical composition of spring steel wire, piano wire (%)

QualitéNorme (EN)CSiMnP max.S max.Cu max.Autre
SH, SM, SLEN 10270-10,35 - 1,000,10 - 0,300,40 - 1,200,035 0,0350,20-
DH, DMEN 10270-10,45 - 1,000,10 - 0,300,40 - 1,200,0200,0250,12-
Classe II (G1-HLE)DIN 17223:1964-1Valeurs non garanties0,0300,0250,12-
51CRV4EN 100890,47 - 0,550,400,70 - 1,100,0250,025
-Cr : 0,90 - 1,20
V : 0,10 - 0,25

The grades of high carbon steels depend on their stress level and the application for which they are intended:

“D” wires are intended for dynamic applications while “S” wires are intended for static applications. “D” hard steels have a better surface quality than “S” (static) steels. They are classified according to their mechanical tensile strength: “L” for Low, “M” for Medium and “H” for High. These wires are cold drawn and their mechanical properties are obtained by cold working the steel.
51CrV4 is a globular high strength annealed steel suitable for hardened and tempered springs.

 

Application of hard steel wire for springs, piano wire

QualitésUtilisations / Applications
SH• Ressorts de traction
• Ressorts de compression
• Ressorts de torsion
• Sollicitations statiques moyennement fortes
• Rarement sollicitations dynamiques
SM • Ressorts de traction
• Ressorts de compression
• Ressorts de torsion
• Sollicitations statiques faibles
SL• Ressorts de traction
• Ressorts de compression
• Ressorts de torsion
• Faibles sollicitations statiques
DH• Ressorts de traction
• Ressorts de compression
• Ressorts de torsion
• Sollicitations dynamiques moyennement fortes
• Egalement pour des formes de fils nécessitant pliage sévère
DM
• Ressorts de traction
• Ressorts de compression
• Ressorts de torsion
• Sollicitations dynamiques moyennement fortes
• Formes de fil nécessitant un pliage sévère
Classe II (G1-HLE)• Ressorts de compression
• Ressorts de traction
• Contraintes élevées
• Contrainte oscillante
51CRV4• Ressorts de compression
• Ressorts trempés et revenus

 

Many industries use our wires to manufacture springs and form parts, but also all types of products using steel wire or bar. The careful selection process of our suppliers allows us to offer the best quality wire to meet the high demands of our customers.

Primarily, Amic hard steel wire is used in the manufacture of tension, compression, torsion and formed wire springs.

 

Tensile strength of hard steel wire for springs, piano wire

 SM - SM galvaSH - SH galva - DH 
ØN/mm²N/mm²Tolérance Ø
0,28 < Ø ≤ 0,302370 - 26502660 - 2940± 0,008
0,30 < Ø ≤ 0,322350 - 26302640 - 2920
0,32 < Ø ≤ 0,342330 - 26002610 - 2890
0,34 < Ø ≤ 0,362310 - 25802590 - 2870
0,36 < Ø ≤ 0,382290 - 25602570 - 2850
0,38 < Ø ≤ 0,402270 - 25502560 - 2830
0,40 < Ø ≤ 0,432250 - 25202530 -2800
0,43 < Ø ≤ 0,452240 - 25002510 - 2780
0,45 < Ø ≤ 0,482220 - 24802490 - 2760
0,48 < Ø ≤ 0,502200 - 24702480 - 2740
0,50 < Ø ≤ 0,532180 - 24502460 - 2720
0,53 < Ø ≤ 0,562170 - 24302440 - 2700
0,56 < Ø ≤ 0,602140 - 24002410 - 2670
0,60 < Ø ≤ 0,632130 - 23802390 - 2650
0,63 < Ø ≤ 0,652120 - 23702380 - 2640± 0,010
0,65 < Ø ≤ 0,702090 - 23502360 - 2610
0,70 < Ø ≤ 0,752070 - 23202330 - 2580
0,75 < Ø ≤ 0,802050 - 23002310 - 2560± 0,015
0,80 < Ø ≤ 0,852030 - 22802290 - 2530
0,85 < Ø ≤ 0,902010 - 22602270 - 2510
0,90 < Ø ≤ 0,952000 - 22402250 - 2490
0,95 < Ø ≤ 1,001980 - 22202230 - 2470
1,00 < Ø ≤ 1,051960 - 22002210 - 2450± 0,020
1,05 < Ø ≤ 1,101950 - 21902200 - 2430
1,10 < Ø ≤ 1,201920 - 21602170 - 2400
1,20 < Ø ≤ 1,251910 - 21402150 - 2380
1,25 < Ø ≤ 1,301900 - 21302140 - 2370
1,30 < Ø ≤ 1,401870 - 21002110 -2340
1,40 < Ø ≤ 1,501850 - 20802090 - 2310
1,50 < Ø ≤ 1,601830 - 20502060 - 2290
1,60 < Ø ≤ 1,701810 - 20302040 -2260
1,70 < Ø ≤ 1,801790 - 20102020 - 2240± 0,025
1,80 < Ø ≤ 1,901770 - 19902000 - 2220
1,90 < Ø ≤ 2,001760 - 19701980 - 2200
2,00 < Ø ≤ 2,101740 - 19601970 - 2180
2,10 < Ø ≤ 2,251720 - 19301940 - 2150
2,25 < Ø ≤ 2,401700 - 19101920 - 2130
2,40 < Ø ≤ 2,501690 - 18901900 - 2110
2,50 < Ø ≤ 2,601670 - 18801890 - 2100
2,60 < Ø ≤ 2,801650 - 18501860 - 2070± 0,030
2,80 < Ø ≤ 3,001630 - 18301840 - 2040
3,00 < Ø ≤ 3,201610 - 18101820 - 2020
3,20 < Ø ≤ 3,401590 - 17801790 - 1990
3,40 < Ø ≤ 3,601570 - 17601770 - 1970
3,60 < Ø ≤ 3,801550 - 17401750 - 1950
3,80 < Ø ≤ 4,001530 - 17301740 - 1930
4,00 < Ø ≤ 4,251510 - 17001710 - 1900± 0,035
4,25 < Ø ≤ 4,501500 - 16801690 - 1880
4,50 < Ø ≤ 4,751480 - 16701680 - 1860
4,75 < Ø ≤ 5,001460 - 16501660 - 1840
5,00 < Ø ≤ 5,301440 - 16301640 - 1820
5,30 < Ø ≤ 5,601430 - 16101620 - 1800± 0,040
5,60 < Ø ≤ 6,001400 - 15801590 - 1770
6,00 < Ø ≤ 6,301390 - 15601570 - 1750
6,30 < Ø ≤ 6,501380 - 15501560 - 1740
6,50 < Ø ≤ 7,001350 - 15301540 - 1710
7,00 < Ø ≤ 7,501330 - 15001510 - 1680± 0,045
7,50 < Ø ≤ 8,001310 - 14801490 - 1660
8,00 < Ø ≤ 8,501290 - 14601470 - 1630
8,50 < Ø ≤ 9,001270 - 14401450 - 1610
9,00 < Ø ≤ 9,501260 -14201430 - 1590± 0,050
9,50 < Ø ≤ 10,001240 - 14001410 - 1570
10,00 < Ø ≤ 10,501220 - 13801390 - 1550± 0,070
10,50 < Ø ≤ 11,001210 - 13701380 - 1530
11,00 < Ø ≤ 12,001180 - 13401350 - 1500± 0,080
12,00 < Ø ≤ 12,501170 - 13201330 - 1480
12,50 < Ø ≤ 13,001160 - 13101320 - 1470
13,00 < Ø ≤ 14,001130 - 12801290 - 1440
14,00 < Ø ≤ 15,001160 - 12601270 - 1410± 0,090
15,00 < Ø ≤ 16,001090 - 12301240 - 1390
16,00 < Ø ≤ 17,001070 - 12101220 - 1360
17,00 < Ø ≤ 18,001050 - 11901200 - 1340
18,00 < Ø ≤ 19,001030 - 11701180 - 1320± 0,100
19,00 < Ø ≤ 20,001020 - 11501160 - 1300

Classe II - G1 - HLE (approx.)
Ø mmN/mm²Tol Ø
0.202697 - 3089± 0,005
0.252697 - 3089
0.302648 - 3040± 0,008
0.352648 - 3040
0.402648 - 3040
0.452648 - 2942
0.502648 - 2942
0.552550 - 2844
0.602550 - 2844
0.652550 - 2844± 0,010
0.702550 - 2844
0.752500 - 2795
0.802500 - 2795± 0,015
0.852500 - 2795
0.902452 - 2746
0.952452 - 2746
1,002452 - 2746
1.102452 - 2746± 0,020
1.202354 - 2697
1.302354 - 2697
1.402354 - 2697
1.502256 - 2501
1.602256 - 2501
1.802207 - 2452± 0,025
2,002108 - 2354

 

Minimum required mass of zinc (Zn) or zinc/aluminium (ZnAl) coating EN 10270-1

Diamètre nominal d (mm)Masse minimale du revêtement (g/m2)
0,20 ≤ d < 0,25 20
0,25 ≤ d < 0,40 25
0,40 ≤ d < 0,50 30
0,50 ≤ d < 0,60 35
0,60 ≤ d < 0,70 40
0,70 ≤ d < 0,80 45
0,80 ≤ d < 0,90 50
0,90 ≤ d < 1,00 55
1,00 ≤ d < 1,20 60
1,20 ≤ d < 1,40 65
1,40 ≤ d < 1,65 70
1,65 ≤ d < 1,85 75
1,85 ≤ d < 2,15 80
2,15 ≤ d < 2,50 85
2,50 ≤ d < 2,80 95
2,80 ≤ d < 3,20 100
3,20 ≤ d < 3,80 105
3,80 ≤ d ≤ 10,00 110

 

Equivalence of standards: (EU: German (DIN) / American)

SL : Class A / A227
SM : Class B / A227
SH: Class C / A228
DH: Class D / A227
DM: ——— / A228

Discover our wide range of products:

mild steel wire (C4D, C7D, C9D, C10D)
stainless steel wires (302, 304, 316 904L…)
nickel alloy wires (Inconel®, Hastelloy®, Monel®…)
non-ferrous wires (copper, aluminium, titanium alloys)

*All data on this website are provided for information purposes only and are not contractual sales condition.

Whatever your need, we offer you a customized solution.
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