HRAP Flat Bars

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

20 - 150 mm width Up to 6.4 metres ASTM A484, EN 10058

OVERVIEW

Product Description

HRAP Flat Bars are produced when the steel is hot rolled and then annealed. This ensures the highest level of resistance against corrosion, including chloride ion corrosion. In the final step, the pickling process is performed by immersing the prepared steel in an acid solution to remove any marks or scale on the steel surface. It undergoes numerous high-tech production processes to ensure exceptional uniformity in product quality.

We, as a top Stainless Steel Flat Bar manufacturer India, supply 304 & 316 flat bars and other SS flat bars with excellent mechanical properties that are frequently used by organizations in various industries like Chemical Industry, Architectural & Structural Design Components, Pharmaceutical, Kitchen equipment, Fuel Gas Cleaning, Seawater System, Firewalls & Blast Walls, Heat Exchangers, Bridges, and Cargo Tanks.

Weight per metre for a given width and thickness is worked out by the weight calculator, and the composition limits for each grade are in the grade reference.

Hot rolled annealed and pickled stainless steel flat bars produced by Laxcon Steels

SPECIFICATION

Supply Conditions

Length: Up to 6.4 metres
Supply condition: Hot rolled, Annealed & Pickled (HRAP)
Tolerance: ASTM A484, EN 10058
Specifications: as per EN, DIN, JIS, ASTM, BS, ASME, etc.

Inkjet printing as per grade & size
Both ends colour coded to the customer's requirement
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		15, 16	3/5", 5/8"
21		17.5
22 / 22.8		11, 13, 16, 17, 18, 19.5	7/16", 64/125", 5/8", 2/3", 5/7"
23.5		14.5
25 / 25.4	1"	8, 10, 12, 12.7, 15, 20	5/16", 2/5", 15/32", 1/2", 3/5", 4/5"
26		11, 13, 16, 21	7/16", 64/125", 5/8", 5/6"
28.5		14	5/9"
30		6, 8, 10, 12, 15, 16, 20	1/4", 5/16", 2/5", 15/32", 3/5", 5/8", 4/5"
31.75 / 32	1-1/4"	9, 11, 12.7, 13, 15, 16, 20, 21	23/64", 7/16", 1/2", 64/125", 3/5", 5/8", 4/5", 5/6"
35		6, 8, 10, 15, 20	1/4", 5/16", 2/5", 3/5", 4/5"
36		23, 27.5
38		23.5
38.1	1-1/2"	6.35	1/4"
40		5, 6, 8, 10, 12, 15, 16, 20, 25, 30	3/16", 1/4", 5/16", 2/5", 15/32", 3/5", 5/8", 4/5", 1", 1-3/16"
42		11, 13, 16, 22, 26, 32	7/16", 64/125", 5/8", 1-3/127", 1-1/4"
45		6, 8, 10, 15, 20, 25	1/4", 5/16", 2/5", 3/5", 4/5", 1"
50 / 50.8	2"	5, 6, 8, 10, 12, 12.7, 15, 16, 20, 25, 30, 40	3/16", 1/4", 5/16", 2/5", 15/32", 1/2", 3/5", 5/8", 4/5", 1", 1-3/16", 1-4/7"
52		11, 16, 21, 26, 32, 42	7/16", 5/8", 5/6", 1-3/127", 1-1/4", 1-2/3"
55		5, 6, 8, 10, 12, 15, 16, 20, 25	3/16", 1/4", 5/16", 2/5", 15/32", 3/5", 5/8", 4/5", 1"
57		32	1-1/4"
60		6, 8, 10, 15, 20, 25, 30, 32, 35, 40	1/4", 5/16", 2/5", 3/5", 4/5", 1", 1-3/16", 1-1/4", 1-3/8", 1-4/7"
63 / 63.5	2-1/2"	11, 13, 15, 16, 20, 21, 25, 30, 32, 42	7/16", 64/125", 3/5", 5/8", 4/5", 5/6", 1", 1-3/16", 1-1/4", 1-2/3"
65		8, 10, 15, 16, 20, 25, 30, 32, 35, 40	5/16", 2/5", 3/5", 5/8", 4/5", 1", 1-3/16", 1-1/4", 1-3/8", 1-4/7"
70		8, 20, 25, 30, 40	5/16", 4/5", 1", 1-3/16", 1-4/7"
72		11, 21	7/16", 5/6"
75 / 76.2	3"	5, 8, 10, 12, 12.7, 15, 20, 25, 30	3/16", 5/16", 2/5", 15/32", 1/2", 3/5", 4/5", 1", 1-3/16"
80		8, 10, 15, 20, 25, 30, 35, 40, 50	5/16", 2/5", 3/5", 4/5", 1", 1-3/16", 1-3/8", 1-4/7", 2"
82		11, 13, 16, 21, 31	7/16", 64/125", 5/8", 5/6", 1-2/9"
90		8, 10, 15, 30, 40, 50	5/16", 2/5", 3/5", 1-3/16", 1-4/7", 2"
100 × 100 / 101.6 × 101.6	4"	6, 6.35, 8, 10, 11, 12, 12.7, 13, 15, 20, 25, 30, 40	1/4", 1/4", 5/16", 2/5", 7/16", 15/32", 1/2", 64/125", 3/5", 4/5", 1", 1-3/16", 1-4/7"
120		10, 12, 15, 16	2/5", 15/32", 3/5", 5/8"
150		10, 12, 15, 16, 20	2/5", 15/32", 3/5", 5/8", 4/5"

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 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.
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.

Weight per metre

Width (mm)	Thickness (mm)	kg per metre
20	15	2.37
20	16	2.53
21	17.5	2.90
22 / 22.8	11	1.91
22 / 22.8	13	2.26
22 / 22.8	16	2.78
22 / 22.8	17	2.95
22 / 22.8	18	3.13
22 / 22.8	19.5	3.39
23.5	14.5	2.69
25/25.4	8	1.58
25/25.4	10	1.98
25/25.4	12	2.37
25/25.4	12.7	2.51
25/25.4	15	2.96
25/25.4	20	3.95
26	11	2.26
26	13	2.67
26	16	3.29
26	21	4.31
28.5	14	3.15
30	6	1.42
30	8	1.90
30	10	2.37
30	12	2.84
30	15	3.56
30	16	3.79
30	20	4.74
31.75/32	9	2.26
31.75/32	11	2.76
31.75/32	12.7	3.19
31.75/32	13	3.26
31.75/32	15	3.76
31.75/32	16	4.01
31.75/32	20	5.02
31.75/32	21	5.27
35	6	1.66
35	8	2.21
35	10	2.77
35	15	4.15
35	20	5.53
36	23	6.54
36	27.5	7.82
38	23.5	7.05
38.1	6.35	1.91
40	5	1.58
40	6	1.90
40	8	2.53
40	10	3.16
40	12	3.79
40	15	4.74
40	16	5.06
40	20	6.32
40	25	7.90
40	30	9.48
42	11	3.65
42	13	4.31
42	16	5.31
42	22	7.30
42	26	8.63
42	32	10.62
45	6	2.13
45	8	2.84
45	10	3.56
45	15	5.33
45	20	7.11
45	25	8.89
50/50.8	5	1.98
50/50.8	6	2.37
50/50.8	8	3.16
50/50.8	10	3.95
50/50.8	12	4.74
50/50.8	12.7	5.02
50/50.8	15	5.93
50/50.8	16	6.32
50/50.8	20	7.90
50/50.8	25	9.88
50/50.8	30	11.85
50/50.8	40	15.80
52	11	4.52
52	16	6.57
52	21	8.63
52	26	10.68
52	32	13.15
52	42	17.25
55	5	2.17
55	6	2.61
55	8	3.48
55	10	4.35
55	12	5.21
55	15	6.52
55	16	6.95
55	20	8.69
55	25	10.86
57	32	14.41
60	6	2.84
60	8	3.79
60	10	4.74
60	15	7.11
60	20	9.48
60	25	11.85
60	30	14.22
60	32	15.17
60	35	16.59
60	40	18.96
63/63.5	11	5.47
63/63.5	13	6.47
63/63.5	15	7.47
63/63.5	16	7.96
63/63.5	20	9.95
63/63.5	21	10.45
63/63.5	25	12.44
63/63.5	30	14.93
63/63.5	32	15.93
63/63.5	42	20.90
65	8	4.11
65	10	5.14
65	15	7.70
65	16	8.22
65	20	10.27
65	25	12.84
65	30	15.41
65	32	16.43
65	35	17.97
65	40	20.54
70	8	4.42
70	20	11.06
70	25	13.83
70	30	16.59
70	40	22.12
72	11	6.26
72	21	11.94
75/76.2	5	2.96
75/76.2	8	4.74
75/76.2	10	5.93
75/76.2	12	7.11
75/76.2	12.7	7.52
75/76.2	15	8.89
75/76.2	20	11.85
75/76.2	25	14.81
75/76.2	30	17.78
80	8	5.06
80	10	6.32
80	15	9.48
80	20	12.64
80	25	15.80
80	30	18.96
80	35	22.12
80	40	25.28
80	50	31.60
82	11	7.13
82	13	8.42
82	16	10.36
82	21	13.60
82	31	20.08
90	8	5.69
90	10	7.11
90	15	10.67
90	30	21.33
90	40	28.44
90	50	35.55
100/101.6	6	4.74
100/101.6	6.35	5.02
100/101.6	8	6.32
100/101.6	10	7.90
100/101.6	11	8.69
100/101.6	12	9.48
100/101.6	12.7	10.03
100/101.6	13	10.27
100/101.6	15	11.85
100/101.6	20	15.80
100/101.6	25	19.75
100/101.6	30	23.70
100/101.6	40	31.60
120	10	9.48
120	12	11.38
120	15	14.22
120	16	15.17
150	10	11.85
150	12	14.22
150	15	17.78
150	16	18.96
150	20	23.70

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.

HRAP: hot rolled, annealed and pickled

The flat leaves the rolling stand at over 1,000 degrees Celsius with a chromium-depleted oxide scale on every face. Annealing dissolves the carbides the rolling heat precipitated and restores the corrosion resistance of the grade; pickling in a nitric-hydrofluoric acid mixture removes the scale and the chromium-depleted layer under it and leaves the matt, silver-grey surface that HRAP denotes. A flat that is welded, or that goes into service with the mill surface exposed, is ordered HRAP; a flat that will be machined on every face can be ordered black.

Tolerances on width and thickness follow EN 10058 or ASTM A484 as the order states. Widths run 20 to 150 mm and thicknesses 5 to 50 mm, and the size table above lists every combination rolled; an edge condition (rolled, round or sharp) is stated on the order where it matters.

HRAP flat against cold drawn flat

The cold drawn flat bar is the same product taken one step further: drawn through a die to h11 on both dimensions with a bright surface and sharp edges, in the 20 to 80 mm widths and in the low-carbon and stabilised grades. Where the part is used as supplied on a face, or a tolerance tighter than EN 10058 is called for, the drawn flat is specified; for structural, architectural and fabrication work at the full 150 mm width, the HRAP flat is the standard section. The equal angle and channel pages carry the other HRAP structural sections.

Frequently Asked Questions

What HRAP stainless steel flat bar sizes are listed?

Laxcon publishes HRAP stainless steel flat bars in widths from 20 mm to 150 mm and thicknesses from 5 mm to 50 mm, subject to the listed width-and-thickness combinations.

Which standards and lengths apply to HRAP flat bars?

HRAP stainless steel flat bars are supplied up to 6.4 metres to ASTM A484 and EN 10058 tolerances after hot rolling, annealing and pickling.

How are HRAP flat bars identified and checked?

HRAP flat bars can be colour coded at the ends and inkjet marked. The published supply information also includes handheld PMI grade confirmation.

How can HRAP stainless steel flat bars be packed and traced?

Laxcon packs HRAP 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 HRAP stainless steel flat bars include?

An enquiry for HRAP 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