Cold-Drawn Stainless Steel Flat Bars

Our integrated manufacturing edge gives us the ability to produce steel in a variety of finishes, surface options and profiles

20 - 80 mm width 2 metres - 6 metres h11 and ASTM A 484 REQUEST A QUOTE

OVERVIEW

Product Description

As one of the top stainless steel cold drawn flat bars manufacturers India, we carry out the cold drawn stainless steel process in which the pointed end of the bar or coil is passed through the die, where it enters a gripping device of the drawing machine. The drawing machine draws the remaining unreduced section of the bar through the die. The die reduces the cross-sectional area of the original bar, increases the length of the original product, and shapes the profile of the product.

The final product being drawn is at room temperature, i.e., cold finished steel bar, which exhibits a bright and polished finish, and improved machining characteristics. The drawing operation enhances the mechanical properties, tensile strength, and precise and uniform dimensional tolerances, offering tight tolerances in the final product. This cold finished steel provides excellent finished steel bar quality compared to hot rolled steel or cold rolled steel.

Composition limits for 304L, 316L, 316Ti and 321, and for the DIN numbers they are ordered under, are in the grade reference. Weight per metre for a given width and thickness is worked out by the weight calculator.

Stainless steel cold-drawn flat bars produced by Laxcon Steels

SPECIFICATION

Supply Conditions

Length: 2 metres - 6 metres (6.5 ft - 20 ft)
Tolerance: h11 and ASTM A 484
Surface Finish: Cold Drawn and Pickled Condition
Heat Treatment: Solution Annealed
Grades: AISI:304L, 316L, 316Ti, 321, DIN: 1.4307, 1.4404, 1.4571, 1.4541

Inkjet printing as per grade & size.
Free from Radioactive elements, Mercury & Lead contamination
Grade confirmation through PMI testing with Handheld Spectrometers
Weight per metre for every listed size: metal weight calculator

Size Range

WIDTH (MM)	WIDTH (IN)	THICKNESS (MM)	THICKNESS (IN)
20		10, 12, 15	2/5", 15/32", 3/5"
25 / 25.4	1"	10, 12, 15, 20	2/5", 15/32", 3/5", 4/5"
30		8, 10, 12, 15, 20	5/16", 2/5", 15/32", 3/5", 4/5"
40		10, 12, 15, 20, 25, 30	2/5", 15/32", 3/5", 4/5", 1", 1-3/16"
50 / 50.8	2"	10, 15, 20, 25, 30, 40	2/5", 3/5", 4/5", 1", 1-3/16", 1-4/7"
60		10, 12, 15, 20, 30, 40	2/5", 15/32", 3/5", 4/5", 1-3/16", 1-4/7"
64		33	1-2/7"
70		10, 20	2/5", 4/5"
80		10, 15, 20, 30	2/5", 3/5", 4/5", 1-3/16"

Governing standards

EN 10088-3: Stainless steels: technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products for general purposes. Composition, heat treatment condition and mechanical properties per grade.
EN 10278: Dimensions and tolerances of bright steel products: the h and k tolerance classes for drawn, turned, peeled and ground bars.
EN 10058: Hot rolled flat steel bars for general purposes: dimensions and tolerances on shape and dimensions.
ASTM A276/A276M: Stainless steel bars and shapes: composition, condition, mechanical properties and finish designations for hot-finished and cold-finished bar.
ASTM A484/A484M: General requirements for stainless steel bars, billets and forgings: permissible variations in dimensions, straightness, weight and length, and the test and marking requirements every bar order inherits.
ISO 286-1 and 286-2: The ISO code system for tolerances on linear sizes: the IT grades and the fundamental deviations behind h7, h9, h11, k12, k13, j6, f7 and f8.
EN 10204: Metallic products, types of inspection documents: the 2.2 test report and the 3.1 and 3.2 inspection certificates a purchase order can call for.

Tolerance by size, ISO 286

Nominal dimension (mm)	h11
over 6 to 10	0 / -0.090
over 10 to 18	0 / -0.110
over 18 to 30	0 / -0.130
over 30 to 50	0 / -0.160
over 50 to 80	0 / -0.190

Deviations in millimetres from the nominal size, ISO 286-1 and ISO 286-2. An h class permits no plus material and the full grade below nominal; the k12 and k13 classes of EN 10278, used for peeled and turned bars, permit the full grade above nominal and none below.

Weight per metre

Width (mm)	Thickness (mm)	kg per metre
20	10	1.58
20	12	1.90
20	15	2.37
25/25.4	10	1.98
25/25.4	12	2.37
25/25.4	15	2.96
25/25.4	20	3.95
30	8	1.90
30	10	2.37
30	12	2.84
30	15	3.56
30	20	4.74
40	10	3.16
40	12	3.79
40	15	4.74
40	20	6.32
40	25	7.90
40	30	9.48
50/50.8	10	3.95
50/50.8	15	5.93
50/50.8	20	7.90
50/50.8	25	9.88
50/50.8	30	11.85
50/50.8	40	15.80
60	10	4.74
60	12	5.69
60	15	7.11
60	20	9.48
60	30	14.22
60	40	18.96
64	33	16.68
70	10	5.53
70	20	11.06
80	10	6.32
80	15	9.48
80	20	12.64
80	30	18.96

Density 7.90 g/cm³, width x thickness x 0.0079. Where a width is listed with two values (25/25.4) the first is used.

Cold drawn flat bar against HRAP flat bar

A hot rolled, annealed and pickled flat bar carries the tolerances of EN 10058 and a pickled, matt surface. The cold drawn flat carries h11 on both width and thickness under EN 10278, sharp edges and a bright surface, and its yield strength is raised by the cold work, which is why a drawn flat is specified for slides, keys, wear strips and any part that is used as supplied on at least one face. The HRAP range runs to 150 mm wide; the drawn range runs 20 to 80 mm, and the four grades supplied drawn (304L, 316L, 316Ti and 321, as 1.4307, 1.4404, 1.4571 and 1.4541) are the low-carbon and stabilised grades that tolerate the cold work without sensitising.

The drawn bar is supplied solution annealed after drawing where the drawing specifies the annealed condition; the certificate then states the annealed properties, not the as-drawn ones.

Frequently Asked Questions

What cold-drawn stainless steel flat bar sizes are listed?

Laxcon publishes cold-drawn stainless steel flat bars in widths from 20 mm to 80 mm and thicknesses from 8 mm to 40 mm, subject to the width-and-thickness combinations in the table below.

Which grades and supply conditions are available?

Published grades for cold-drawn flat bars include 304L, 316L, 316Ti and 321, with DIN equivalents 1.4307, 1.4404, 1.4571 and 1.4541. Bars are supplied cold drawn and pickled, solution annealed, in lengths from 2 to 6 metres.

Which dimensional tolerances apply to cold-drawn flat bars?

Cold-drawn stainless steel flat bars are supplied to h11 and ASTM A484 tolerances. Final acceptance should state the grade, width, thickness, length and applicable tolerance on the purchase order.

How can cold-drawn stainless steel flat bars be packed and traced?

Laxcon packs cold-drawn stainless steel flat bars in standard bundles of 500 to 1,000 kg with HDPE or LDPE wrapping and two lifting slings. ISPM 15 wooden boxes and fibre-tube packing are available, and every bundle is marked with heat number, grade, size, and net and gross weight.

What should an RFQ for cold-drawn stainless steel flat bars include?

An enquiry for cold-drawn stainless steel flat bars is quotable when it states the grade, governing standard, metric size or profile, tolerance, finish or heat-treatment condition, length, quantity, test or inspection requirement, and delivery destination.

CATALOGUE