Cold Drawn Special Profiles
Drawn sections held below 0.05 mm on size with a Ra under 2.5 um surface
What Cold Drawn Special Profiles Is and Who It Is For
Cold drawn special profiles are pulled through a die to a finished cross section, so the bar leaves us with a bright surface and dimensions that can go straight into assembly. Size tolerance is below 0.05 mm, straightness below 0.1 mm/m and surface roughness below Ra 2.5 um. Cross sections run from 1 mm2 up to 3800 mm2 in lengths up to 6 m or cut to length.
Key Benefits
- Dimensions tight enough that many parts skip grinding altogether
- Decarburisation kept below 0.1 mm, so the hardened surface survives heat treatment
- Bright drawn surface needs no descaling before plating or assembly
- Flat profiles supplied to h9 tolerance for the agricultural tool trade
| Surface roughness | Ra < 2.5 um |
|---|---|
| Decarburization | < 0.1 mm |
| Straightness | < 0.1 mm/m |
| Twisting | < 0.25 deg/m |
| Size tolerances | < 0.05 mm |
| Cross section | 1 mm2 up to 3800 mm2 |
| Length | up to 6 m or cut to fixed length |
| Flat profile tolerance | h9 |
Who It Is For
- Machine tool builders who assemble without regrinding
- Hand tool manufacturers ordering in diameters between 1 mm and 50 mm
- Agricultural component makers needing h9 flats
Problems It Solves
- Ground bar stock costs more than the tolerance the part actually needs
- Hot rolled scale has to be removed before plating or welding
- Decarburised skin makes a hardened part fail early
Technical Features
- Cross sections from 1 mm2 up to 3800 mm2
- Profiles up to 6 mm in diameter can be delivered in coils
- Stress relieving heat treatment supplied on cold drawn tool profiles
- Twisting held below 0.25 deg/m
Where Cold Drawn Special Profiles Is Used
Machine tool components such as T-nut profiles and telescopic steel cu
Machine tool components such as T-nut profiles and telescopic steel curtain sections
Hand tool blanks for chisels, punches, hexagon and octagon keys
Hand tool blanks for chisels, punches, hexagon and octagon keys
Cold drawn flat profiles in custom sizes for agricultural tool makers
Cold drawn flat profiles in custom sizes for agricultural tool makers
Linear motion rails and carriages in induction hardening and case hard
Linear motion rails and carriages in induction hardening and case hardening steels
Materials
- Carbon steel
- Free cutting steel
- Alloy steel
- Stainless steel
- C45
- 51CrV4
- 59CrV4
- 102Cr6
Quality Control
- Size checked against the 0.05 mm tolerance band
- Decarburisation depth verified below 0.1 mm
- Free sample supplied for buyer inspection and testing before volume production
Customization Options
- Any drawing-defined cross section
- Coil delivery for sections up to 6 mm in diameter
- Stress relieved or as-drawn condition
- Fixed cut lengths
How We Make It
Drawing review
Drawing review and die design
Pickling
Pickling and preparation of the rolled stock
Cold drawing through the die
Stress relieving heat treatment
Stress relieving heat treatment where required
Straightening
Straightening and cutting
Dimensional inspection
How It Compares
Against hot rolled profiles the cold drawn route gives roughly ten times tighter size control and a far smoother surface, at the cost of a smaller maximum cross section and shorter bars.
Use Guide
- Mark which dimension on the drawing is the functional one
- Say whether the profile will be hardened, so we can set the stress relieving step
- For small sections confirm whether you want coils or straight bars
- Check the sample against your gauge before volume release
Often Ordered Together
Hot Rolled Special Profiles
Near net shape sections rolled from your drawing in cross sections up to 7000 mm2
View details
Tool Steel Profiles
Hexagon octagon and flat sections for chisels punches keys scrapers and files
View details
T-Nut Profiles for Machine Tables
Cold drawn T sections for CNC machine tables and telescopic steel curtains
View detailsWhere To Read More
Questions Buyers Ask About Cold Drawn Special Profiles
What size tolerance can you hold on a drawn profile?
Below 0.05 mm on the drawn cross section, with straightness below 0.1 mm/m.
Can small profiles be supplied in coil?
Yes, profiles up to 6 mm in diameter can be delivered in coils.
Which steel grades are common for tool profiles?
C45, 51CrV4, 59CrV4 and 102Cr6, plus stainless grades on request.
Get a Quote for Cold Drawn Special Profiles
Send the drawing, the quantity and the delivery condition you need. We reply with price, lead time and a sample plan.