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CHQ WIRE · TECHNICAL CONTENT

ISO 4954 - Annex A

This page outlines the delivery specifications for each steel grade, including grade properties, applications, chemical composition, manufacturing process, mechanical properties, tensile strength, and hardenability.

Product Details - Shanghai Creation Group Co., Ltd.

ISO 4954 - Annex A

ISO 4954 - Appendix A related images
ISO 4954 - Appendix A related images
ISO 4954 - Appendix A related images
Diameter: 0.40-46 mm
Tensile strength: Refer to technical information
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Creation Group is a benchmark enterprise in China specializing in high-quality cold heading wire (CHQ wire). The entire management team has 20 years of industry experience. We have established strong relationships with many Tier 1 suppliers in the automotive industry, and all wire rod is sourced from branded steel mills. All orders are 100% traceable.

ISO 4954 - Appendix A related images

Delivery condition

: AC

Surface Quality

- Continuously smooth

- Free of seams, laps, pits, scratches, and drawing marks

- Rust-free

ISO 4954 - Appendix A related images
ISO 4954 - Appendix A related images

Applications

- Automotive industry

- Construction industry

- Machinery industry

- Other industries

1. Combinations of delivery conditions

Table A.1 – Combinations of heat treatment condition at delivery, product form, and applicable requirements

Delivery conditionSymbolsProduct form aApplicable requirements
Wire rodBarWire
Untreated (as hot-rolled)+ARXX-Chemical composition as specified inTable A.2Mechanical properties as specified inTTable A.3Supplementary or special requirements as specified in Annex Eb
peeled Untreated+peeled+AR+PEXX-
Cold drawn+AR+C-XX
Cold drawn + spheroidized+AR+C+AC-XX
Cold drawn + spheroidized + skin-passed+AR+C+AC+LC-XX
Annealed to achieve spheroidized carbides +As treated or peeled+AC or AC+PEXX-
cold drawn+AC+C-XX
OtherOther delivery conditions may be agreed at the time of ordering
a X=applicable,—=not applicable b Ifagreed at the time of enquiry and order.

2. Chemical composition

Table A.2 – Chemical composition of steels not intended for heat treatment after cold working (applicable to cast analysis) a

Steel name%mass fraction a
CSiMnPSCrNiMoAl bCuCr+Ni+Mo
Non-alloy steel grades
C2C0,030,100,20 to 0,40d0,0200,0250,300,300,100,020 to 0,0600,300,50
C4C0,02 to 0,060,100,25 to 0,400,0200,0250,300,300,100,020 to 0,0600,300,50
C8C0,06 to 0,100,100,25 to 0,450,0200,0250,300,300,100,020 to 0,0600,300,50
C10C0,08 to 0,120,100,30 to 0,500,0250,0250,300,300,100,020 to 0,0600,300,50
C10GC0,08 to 0,120,15 to 0,25c0,30 to 0,500,0250,0250,300,300,100,300,50
C15C0,13 to 0,170,100,35 to 0,600,0250,0250,300,300,100,020 to 0,0600,300,50
C15GC0,13 to 0,170,15 to 0,25c0,35 to 0,600,0250,0250,300,300,10c0,300,50
C17C0,15 to 0,190,100,65 to 0,850,0250,0250,300,300,100,020 to 0,0600,300,50
C17GC0,15 to 0,190,15 to 0,25c0,65 to 0,850,0250,0250,300,300,100,300,50
C20C0,18 to 0,220,100,70 to 0,90d0,0250,0250,300,300,100,020 to 0,0600,300,50
C20GC0,18 to 0,220,15 to 0,25c0,70 to 0,90d0,0250,0250,300,300,10c0,300,50
C25C0,23 to 0,270,100,80 to 1.00d0,0250,0250,300,300,100,020 to 0,0600,300,50
C25GC0,23 to 0,270,15 to 0,25c0,80 to 1,00d0,0250,0250,300,300,10—0,300,50
Elements not quoted in this table should not be intentionally added to the steel without the agreement of the purchaser,except those intended for finishing the heat.All reasonable precautions shall be taken in order to prevent the addition of elements from scrap or other material used in the production process.However,residual elements may be present provided that they do not affect the mechanical properties and applicability a    Maximum values unless otherwise indicated. b  Aluminium may be replaced by another element or elements having a similar effect C     Grade C10GC,C15GC,C17GC and C20GC can be delivered in two qualities:a)with an aluminium content of Al max.0,015 %,or b)without aluminium and a silicon content of 0,15 %to 0,25 %for hot dip zinc coating d For grades C2C,C20C,C20GC and C25C,a lower manganese content may be specified with a range of 0,20 %.

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3. Mechanical properties

Table A.3 – Mechanical properties of wire, bars, and wire not intended for heat treatment after cold working

Steel nameDiameterDelivery Condition
+AR or +AR+PE+AC or+AC+PE+AR+C+AR+C+AC+AR+C+AC+LC+AC+C
above mmup to mmRm max. MPaZ min. %R max. MPaZ min. %Rm max MPaZmin %Rm max MPaMin. %Rmax MPaMin. %R max. MPaMin. %
C2C25————————3108035075———
51036075450703008034075
104036075440703008034075
4010036075440683008034075
C4C253207736073
510390703307547066310773507341070
1040390703307546066300773507340070
401003907033075———
C8C25——————3507239068——
510410653607049063340723806845065
1040410653607048063340723806844065
401004106536070——————
C10C C10GC25—3707241068
510430603807052058360724006847063
1040430603807051058360724006846063
401004306038070———
C15C C15GC25———3907043066
510460584006855056380704206649063
1040460584006854056380704206648063
401004605840068————————————
C17C C17GC25——————4306747063——
510520584406561056420674606353060
1040520584406560056420674606352060
401005205844065—
a The values are provided for reference only.

4. Hardenability requirements

Product DetailTechnical InformationInspectionPackaging

1. In Coil

Example of wire coil bundling

2. Strip-shaped

Example of wire coil bundling

3. Export wooden crate packaging

Example of wire coil bundling

4. Container loading photos

Container loading photos

5. Product protection details

Product protection

5. Product protection details

Product protection

Example of outer packaging

End-face wooden board packaging
Wrapped packaging
PP woven bag packaging
Wire rack packaging
Pallet packaging

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