Grade 60
Specification details for Grade 60

EN_US-Engineering-Product-Metallic coated-All Grades Surface aspects

Surface aspects

Surface Aspects

Surface quality

Surface quality complies with ASTM standards A653: 2008 and A924: 2009. The products can be delivered with the following coating/surface types:

Minimized spangle (standard surface)

Imperfections such as pimples, marks, scratches, pits, variations in surface appearance, dark spots, stripe marks and light passivation stains are permissible.

Stretch levelling breaks or run-off marks may appear. Coil breaks and stretcher strains may also appear.

Minimized spangle temper rolled (improved surface)

With this surface quality, small imperfections such as stretch levelling breaks, skin pass marks, slight scratches, indentations, surface structure, zinc run-off marks and light passivation stains are permissible.

Extra smooth (best surface, exposed)

Surface quality is obtained by skin passing. The controlled surface shall make it possible to apply a uniform high-class paint finish. The other surface shall at least have the characteristics of surface quality B. As a rule, the upper side of the strip is inspected; on request the strip can be turned over so that the underside is the inspected side.

MagiZinc® is currently only available with standard or improved surface qualities.

Surface roughness

Metallic coated steel will normally be supplied with a regular matte finish:

Description Roughness µinch CLA
regular matte 30 - 61

Surface treatments

The surface treatments available are O, C and CO.

Oiling (O)

The material surface can be oiled with preservative oil. Other types of oil may be available to meet your requirement – please contact us.

Tata Steel offers the following range of oiling levels for all coating types:

Lightly oiled:  55 mg/ft2 per side
Regular oiled:  110 mg/ft2 per side

Other oiling levels are available on request. If no amount is indicated in your specification, a regular amount of oil will be applied.

Chromium-free passivation (C)

This surface treatment temporarily protects the zinc coated material against white rust during transportation and storage (not applicable to all qualities – please consult us).

Chromium-free passivation and oiled (CO)

Please request this combination of surface treatments if you require extra protection against white rust formation (not applicable to all qualities – please consult us).


Please contact us on the availability of other surface treatments.


EN_US-Engineering-Product-Metallic coated-HSS-Grade 60-Properties



Mechanical properties

Metallic coated high-strength steel grades have the following mechanical properties - these are measured parallel (longitudinal) to the rolling direction:

ASTM A653: 2008 Min. yield Min. tensile Min. elongation
  strength strength 2 inch
HSLAS Grade ksi ksi %
Grade 60 60 70 16
Grade 60 F 60 70 18

Chemical composition

Tata Steel supplies the following heat analysis with values in weight percentages:

ASTM A653 HSLAS Grade Grade 60 Grade 60 F
C Max. 0.2 0.15
Mn Max. 1.35 1.2
S Max. 0.035 0.035
Cu Max. 0.2 0.2
Ni Max. 0.2 0.2
Cr Max. 0.15 0.15
Mo Max. 0.16 0.16
V 1 Min. 0.01 0.01
Cb 1 Min. 0.005 0.005
Ti 1 Min. 0.01 0.01
1. singly or in combination.

EN_US-Engineering-Product-Metallic coated-All grades Shape and dimensional tolerances

Shape and dimensional tolerances

Shape and dimensional tolerances

Tolerances on thickness

The thickness tolerances comply with standard ASTM A924: 2013 – 1 inch minimum edge distance.
Thickness tolerances over, no tolerance under. Dimensions in inches:

Specified thickness Normal tolerances for a specified width of
From - up to 0 - 32 32 - 40 40 - 60 60 - 75
0.000 - 0.023 0.003 0.003 0.003 0.003
0.023 - 0.043 0.004 0.004 0.004 0.004
0.043 - 0.061 0.005 0.005 0.005 0.005
0.061 - 0.075 0.006 0.006 0.006 0.006
0.075 - 0.101 0.01 0.012 0.012 0.014
0.101 - 0.187 0.012 0.012 0.014 0.014

Around cold-rolled welds an increase of 20 % at the most over the thickness tolerance is allowed over a length of 50 ft.
Thickness tolerance availability is shown below:

Thickness tolerance Availability
Full thickness tolerance Available
Special thickness tolerance Refer before ordering
50% of full thickness tolerance Refer before ordering

Tolerances on width

The tolerances for width comply with standard ASTM A924: 2013.
Thickness tolerances over, no tolerance under. Dimensions in inches:

Specified width Tolerances for a specified width of
From - up to Mill edge Cut edge
30 - 48 0.71 0.187
48 - 60 0.71 0.25
60 - 75 0.71 0.312

MagiZinc® is not included in the standard. Tighter tolerances are available on request.

Dimensions and coil weights

Description Capabilities
Inside diameter standard 24 inches, 20 inches on request
Outside diameter maximum 98 inches and at the most
  10/7 x width
Coil weight maximum 66.000 lbs.
PIW: width ≤ 47 868 - 1232 PIW
PIW: 47 inch < width ≤ 67 inch 868 - 1215 PIW
PIW: width > 67 inch 616 PIW and 868 - 1215 PIW

Coating layer

Coating layer Coating weight total both sides
G30 0.3
G35 1 0.35
G40 0.4
G60 0.6
G75 1 0.75
G90 0.9
G115 1.15

1. not in ASTM A653: 2008.
Other coating weights are available. Please contact us to discuss your requirements.