Construction

Carbon Steel Hot Rolled Plate Black S235JR SS400 Mild Steel Plate

DETAILS AND PARAMETERS

TOLERANCES

TECHNICAL SHEET

Product Introduction

Hot rolled steel plate is produced by rolling steel ingots or continuous casting billets through a rolling mill at high temperatures. This manufacturing process endows the steel plate with several distinct characteristics. It exhibits high plasticity, making it highly suitable for forming operations. Additionally, it has good weldability, facilitating its use in various welded structures. However, its relatively low hardness is a characteristic that needs to be considered in specific applications.

Applications

Application Type	Typical Uses
Structural Steel	Steel structures, bridges, ships, vehicles
Weathering Steel	Container manufacturing, special vehicles, building structures
Automotive Structural Steel	Automotive components (e.g., FRAME, WHEEL)
Special Hot Rolled Steel	Mechanical parts (after heat treatment)
Cold Rolled Base Plate	Production of cold-rolled products (CR, GI, color-coated sheets)
Steel Plate for Steel Pipe	High-pressure gas vessels (≤500L; for LPG, acetylene, etc.)
Steel Plate for High-Pressure Vessels	High-pressure gas vessels (with specialized needs)
Stainless Steel Plate	Food industry, surgical equipment, aerospace, petroleum/chemical industries

Why Choose our Product?

1.Global Standard Compliance

Adhere to GB/T 709-2019, JIS G3131, ASTM A1018/A1018M, EN10025; every batch passes multi-inspections (thickness, mechanics, corrosion) for stable quality.

2.Scenario-Tailored Performance

Full product range (structural/weathering/automotive/stainless steel, etc.) optimized for needs:

Weathering steel (P/Cu added): anti-corrosion for outdoors;

Automotive steel: high-strength, good stamping/weldability;

Cold-rolled base plate: uniform thickness for downstream processing.

3.Reliable Supply

Advanced rolling/casting lines reduce defects; sufficient monthly output + flexible delivery avoid project delays.

FAQ

Q:What is hot rolled steel plate?

A:It’s a steel product made by rolling steel ingots or continuous casting billets at high temperatures (usually above 900°C).

Q:Does hot rolled steel plate have good weldability?

A:Yes, most hot rolled steel grades (e.g., structural steel) have good weldability, making them suitable for welded structures.

Q:What are the main uses of hot rolled steel plate?

A:Commonly used for steel structures, bridges, ships, automotive components, containers, and as raw material for cold-rolled products.

Measurement method: direct measurement with digital thickness gauge and at a distance of no less than 1 inch from the edge

Width	Thickness, inches
Width	0.027 a 0.051 inclusive	0.051 a 0.057 inclusive	0.057 a 0.071 inclusive	0071 a 0.098 inclusive	0.098 a 0.18 exclusive	0.18 a 0.23 exclusive
20 - 40 inches inclusive	0.008	0.008	0.009	0.010	0.010	0.012
40 - 48 inches inclusive	0.008	0.009	0.009	0.010	0.012	0.014

Width, mm

Thickness, mm

Hasta 2 mm

De 2 mm - 2.5

mm inclusive

2.5 mm a 4.5

mm exclusive

4.5 mm a 6.0

mm exclusive

1200 a

1500 mm

inclusive

0.26

0.30

0.38

Minimum thickness, mm	Nominal thickness, mm	Maximum thickness, mm
1.47	1.59	1.70
1.47	1.59	1.70
1.47	1.59	1.70
1.47	1.59	1.70
1.47	1.59	1.70
1.89	2.00	2.11
2.25	2.38	2.51
2.25	2.38	2.51
2.25	2.38	2.51
3.02	3.18	3.33
3.02	3.18	3.33
4.58	4.76	4.94
4.64	4.76	4.89
4.61	4.76	4.91
4.58	4.76	4.94
4.56	4.76	4.97
4.56	4.76	4.97
1.87	2.00	2.13
2.85	3.00	3.15

The width tolerance must be according to what is established in table 6 and 7 of the ASTM A568 standard (English System) depending on whether it is a mill edge or cut edge. There is no negative tolerance, only positive.

Width tolerance for mill Edge hot rolled Steel sheet

Width, inches	Upper tolerance, no tolerance under specified width
30 a 50 included	+1 1/8”

Width tolerance for cut Edge for hot rolled Steel sheet

Width, inches	Upper tolerance, no tolerance under specified width
30 to 48 inches (included)	+3/16”

Measurement method: direct measurement using a measuring tape

Hot rolled steel sheet	Minimum width, mm	Nominal width, mm	Maximum width, mm
3' X 6' X 1/16"	914.40	914.40	919.16
3' X 6' X 3/16"	914.40	914.40	919.16
3' X 7' X 1/16"	914.40	914.40	919.16
3' X 8' X 1/16"	914.40	914.40	919.16
3' X 8' X 3/16"	914.40	914.40	919.16
4' X 8' X 1/16"	1219.20	1219.20	1223.96
4' X 8' X 1/8"	1219.20	1219.20	1223.96
4' X 8' X 3/16"	1219.20	1219.20	1223.96
4' X 8' X 2.0mm	1219.20	1219.20	1223.96
4' X 8' X 3.0mm	1219.20	1219.20	1223.96
4' X 8' X 3/32"	1219.20	1219.20	1223.96
4' X 10' X 1/16"	1219.20	1219.20	1223.96
4' X 10' X 1/8"	1219.20	1219.20	1223.96
4' X 10' X 3/16"	1219.20	1219.20	1223.96

The length tolerance must be in accordance with what is established in table 8 of the ASTM A568 standard. There is no negative tolerance, only positive.

Length, inches

Tolerance over, no tolerance under

60 a 120 (included)

(6, 7, 8, 9 y 10 pies)

+ ¾”

Measurement method: direct measurement using a measuring tape

Hot rolled steel sheet	Minimum length, mm	Nominal length, mm	Maximum length, mm
3' X 6' X 1/16"	1828.80	1828.80	1847.85
3' X 6' X 3/16"	1828.80	1828.80	1847.85
3' X 7' X 1/16"	2133.60	2133.60	2152.65
3' X 8' X 1/16"	2438.40	2438.40	2457.45
3' X 8' X 3/16"	2438.40	2438.40	2457.45
4' X 8' X 1/16"	2438.40	2438.40	2457.45
4' X 8' X 1/8"	2438.40	2438.40	2457.45
4' X 8' X 3/16"	2438.40	2438.40	2457.45
4' X 8' X 2.0mm	2438.40	2438.40	2457.45
4' X 8' X 3.0mm	2438.40	2438.40	2457.45
4' X 8' X 3/32"	2438.40	2438.40	2457.45
4' X 10' X 1/16"	3048.00	3048.00	3067.05
4' X 10' X 1/8"	3048.00	3048.00	3067.05
4' X 10' X 3/16"	3048.00	3048.00	3067.05

Maximum straightness should be according to table 10 of ASTM A568 Standard.

Length, feet	Tolerance
4 a 6 (included)	3/16”
6 a 8 (included)	¼”
8 a 10 (included)	5/16”

Method of measurement: According to ASTM A1030/A1030M Standard: Practice for Measuring Flatness Characteristics of Steel Sheet Products

Thickness, inches	Width, inches	Tolerance of flatness
		Minumum yield strength, ksi
		Less than 45	45 to 55	55 to 80	80 to 100
0.057 a 0.18 exclusive (1/16, 1/8, 3/32)	12 a 60 incl.	1 ½	2 ¼	2 ½	2 ¾
	60 a 72 incl. (6 feet)	2 ¼	3 3/8”	3 ½”	3 ¾”
	> 72 incl. (7, 8 y 10 feet)	3	4 ½	4 ¾	5
0.18 a 0.23 exclusive (3/16”)	12 a 60 incl.	1 ½	2 ¼	2 ¼	2 ¾
	60 a 72 incl. (6 feet)	2 ¼	3 3/8	3 3/8	3 ¾
	>72 (7, 8 y 10 pies)	3	4 ½	4 ½	5

Out of square

The out-of-square tolerance must be according to what is indicated in table 11 of the ASTM A568 standard.Out of square is the greatest deviation of the end of the edge from a straight line at right angles to one side touching the corner. It is also obtained by measuring the difference of diagonals. The out of square is half of this difference:The maximum out of square should be 1/16” per 6 inches width, that means, 1/8” / feet of width.

Measurement method: Direct measurement with tape measure