Thickness Tolerance Table of Cold Rolled Steel Plate

The thickness tolerance of cold-rolled stainless steel plates has corresponding standards to follow.

It is recommended that you purchase cold-rolled steel plates with different thickness tolerances as required

The thickness tolerance of cold-rolled steel plate is listed in this paper with reference to the national standard GBT24,511-2017 and the national standard GBT3280-2015 (that is, the minimum value that the actual thickness of steel plate should reach according to the PTA common thickness accuracy standard).

Thickness Tolerance Table of Cold Rolled Steel Plate 1

The thickness of cold rolled steel plate is generally less than 6mm, and the common thickness of cold rolled steel plate is 1.0, 1.2, 1.5, 2.0, 2.5, 3.0, 4.0, 5.0, 6.0 (unit: mm).

Cold-rolled steel plates with different thicknesses and finishes have different thickness tolerance requirements.

In accordance with the general thickness accuracy standard of GB/T3280-2015 Cold Rolled Stainless Steel Plates and Strips, the actual thickness of 304 cold rolled steel plates with a thickness of 1mm and a finish of 1219mm shall be ≥ 0.9mm.

According to GB/T3280-2015 national standard, the following table lists the thickness tolerance requirements of common cold-rolled steel plates (according to common thickness accuracy standards):

Table 1 Thickness Tolerance of Cold Rolled Steel Plate

According to GB/T3280-2015 Cold Rolled Stainless Steel Plate and Strip, PT. A (i.e. ordinary thickness accuracy)

Theoretical thickness Width case
1000 or 1219 ② 1500 2000
0.5① ≥0.45③ ≥0.42
0.8 ≥0.71 ≥0.7
1 ≥0.9 ≥0.88
1.2 ≥1.1 ≥1.08 ≥1.08
1.5 ≥1.38 ≥1.35 ≥1.35
2 ≥1.83 ≥1.8 ≥1.8
2.5 ≥2.28 ≥2.25 ≥2.25
3 ≥2.78 ≥2.75 ≥2.75
4 ≥3.65 ≥3.6 ≥3.6
5 ≥4.6 ≥4.55 ≥4.55
6 ≥5.6 ≥5.55 ≥5.55

Remarks:

1. Unit: mm

2. ① refers to the theoretical thickness of the steel plate, which is also the thickness used in daily writing, such as 3043 * 1000 * 2000=1, that is, a piece of 304 stainless steel plate with a thickness of 3mm, a width of 1m, and a length of 2m:

② The width of the steel plate is 1219mm, i.e. 1.219m

③ The minimum value of the actual thickness of the steel plate according to the corresponding standards.

≥ 0.45, that is, the actual thickness of the steel plate marked as 0.5m shall be greater than or equal to 0.45mm.

According to GB/T24511-2017 national standard, the following table lists the thickness tolerance requirements of common cold-rolled steel plates (according to common thickness accuracy standards):

Table 2 Thickness Tolerance of Cold Rolled Steel Plate

According to GB/T24511-2017 Stainless and Heat Resisting Steel Plates and Strips for Pressure Equipment (PT. A)

Theoretical thickness Width case
1000② 1219 1500 or 2000
1.5① ≥1.42③ ≥1.41 ≥1.4
2 ≥1.92 ≥1.91 ≥1.9
2.5 ≥2.41 ≥2.4 ≥2.39
3 ≥2.89 ≥2.88 ≥2.88
4 ≥3.87 ≥3.86mm ≥3.86
5 ≥4.86 ≥4.85 ≥4.85
6 ≥5.85 ≥5.84 ≥5.84
8 ≥7.84 ≥7.83 ≥7.83

Remarks:

1. Unit: mm

2. ① refers to the theoretical thickness of the steel plate, which is also the thickness used in daily writing, such as 3041.5 * 1000 * 2000=1, that is, a piece of 304 stainless steel plate 1.5mm thick, 1m wide and 2m long;

② The width of the steel plate is 1000mm, i.e. 1m;

③ The minimum value of the actual thickness of the steel plate according to the corresponding standards.

1.42, that is, the actual thickness of the steel plate marked 1.5mm shall be greater than or equal to 1.42mm.

The thickness tolerance of cold-rolled stainless steel plates has corresponding standards to follow.

It is recommended that you select and purchase cold-rolled steel plates with different thickness tolerances as required.

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