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SEMI G4-0302 © SEMI 1982, 2002 3 Table 4 Width Thick n ess Tolerance under 15 m m to 55 m m 0.1 m m to unde r 0.3 mm ± 0.05 mm 0.3 mm to under 1.0 mm ± 0.08 mm 1.0 mm to 2.0 m m ± 0.15 mm over 55 m m to 100 m m 0.1 mm to…

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SEMI G4-0302 © SEMI 1982, 2002 2
JIS Z2251 — Method of Micro Hardness Test for
Vickers and Knoop Hardness
3 Ordering Information
Orders for material under this specification shall
include the following information:
1. Quantity of each size
2. Alloy name and number (see Section 4)
3. Temper or mechanical properties (see Section 4)
4. Dimensions: thickness and width (see Section 5)
5. How furnished: coils and coil size (see Section 10)
6. Special processing requirements
7. Certification or test report requirements (see Section
11).
4 Designations
4.1 Material designations shall be based on appropriate
area standards based on country or area of material
origin.
4.1.1 Europe ISO 1190 Part 1
4.1.2 Japan JIS H3100, JIS H3110
4.1.3 United States ASTM E 5.27
4.2 Temper designations shall be based on appropriate
area standards based on country or area of material
origin.
4.2.1 Europe EN133/10 and 133/12
4.2.2 Japan JIS H3100, JIS H 3110
4.2.3 United States ASTM B 601
5 Requirements
5.1 General Requirements
5.1.1 The materials covered by this specification shall
conform to the requirements detailed herein, unless
otherwise agreed upon by supplier and purchaser.
5.2 Mechanical Properties
5.2.1 The preferred method of designating mechanical
properties of material covered under this specification
is tensile strength. In addition to tensile strength, the
0.2% offset yield strength and percent elongation in 50
mm may be required if agreed between supplier and
purchaser. The test shall conform to the appropriate
area standards based on country or area of material
origin.
5.2.1.1 Europe EN10 002 Part 1
5.2.1.2 Japan JIS Z2201, Z2241
5.2.1.3 United States ASTM E8
5.2.2 Should supplier and purchaser agree,
microhardness may be used in lieu of tensile strength as
the test for mechanical property. The test shall conform
to the appropriate area standard based on country or
area of material origin.
5.2.2.1 Europe ISO 6507 Part 1 and Part 2
5.2.2.2 Japan JIS Z2251, Z2244 (Test load shall be
chosen from Table 1).
5.2.2.3 United States ASTM E 384
Table 1
Thickness of Metal Strip (mm) Test Load of Vickers Hardness
0.100 to 0.160 1.961 N (200 gf)
over 0.160 to 0.500 4.903 N (500 gf)
over 0.500 9.807 N (1 Kgf)
5.3 Thickness and Width Tolerance
5.3.1 Thickness tolerance for material covered under
this specification shall be chosen from Tables 2 and 3.
Table 2
Thickness Tolerance
0.10 mm to 0.15 mm ± 0.005 mm
over 0.15 mm to 2.0 mm ± 3% of the ordered
material thickness
Table 3
Thickness Tolerance
0.10 mm up to 0.15 mm ± 0.005 mm
0.15 mm up to 0.3 mm ± 0.008 mm
0.3 mm up to 0.5 mm ± 0.010 mm
0.5 mm up to 0.8 mm ± 0.013 mm
0.8 mm up to 1.0 mm ± 0.015 mm
1.0 mm up to 1.5 mm ± 0.020 mm
1.5 mm up to 2.0 mm ±0.025 mm
* Table 3 is used in Europe.
5.3.2 Width tolerance shall be as shown in Tables 4
and 5.
SEMI G4-0302 © SEMI 1982, 2002 3
Table 4
Width Thickness Tolerance
under 15 mm to 55 mm 0.1 mm to under 0.3 mm ± 0.05 mm
0.3 mm to under 1.0 mm ± 0.08 mm
1.0 mm to 2.0 mm ± 0.15 mm
over 55 mm to 100 mm 0.1 mm to under 0.3 mm ± 0.08 mm
0.3 mm to under 1.0 mm ± 0.12 mm
1.0 mm to 2.0 mm ± 0.15 mm
Table 5
Width Thickness Tolerance
under 15 mm over 0.1 mm to 0.3 mm ± 0.05 mm
over 0.3 mm to 1.0 mm ± 0.08 mm
over 1.0 mm to 2.0 mm ± 0.15 mm
15 mm to 55 mm over 0.1 mm to 0.3 mm ± 0.05 mm
over 0.3 mm to 1.0 mm ± 0.08 mm
over 1.0 mm to 2.0 mm ± 0.15 mm
Over 55 mm to 100
mm
over 0.1 mm to 0.3 mm ± 0.08 mm
over 0.3 mm to 1.0 mm ± 0.12 mm
over 1.0 mm to 2.0 mm ± 0.15 mm
* Table 5 is used in Europe.
5.4 Surface Finish
5.4.1 The material shall be commercially free of
surface imperfections such as pits, nicks, dents, gouges,
scratches, laminations, or inclusions.
5.4.2 The surface roughness of both sides shall be
measured perpendicular to the direction of rolling and
indicated as the arithmetic average height (R
a
) and the
maximum peak-to-valley roughness height (R
max
).
5.4.2.1 Measurement and designations of surface
roughness shall conform to appropriate area standards
based on country or area of material origin.
5.4.2.1.1 Europe ISO 4287 Part 1
5.4.2.1.2 Japan JIS B0601
5.4.2.1.3 United States ANSI/ASME B46.1
5.4.2.2 Conditions for the measurement are shown in
Table 6.
Table 6
Radius of Diamond
Stylus: Less than 5mm
(Record Actual Size)
Cut Off: 0.8 mm
Stroke: 4 mm
5.4.2.3 Maximum acceptable values for surface
roughness are shown in Table 7.
Table 7
Thickness R
a
R
max
0.1 mm to under 0.3 mm 0.15 µm 1.0 µm (1.5 µm)
0.3 mm to 2 mm 0.20 µm 1.5 µm (2.0 µm)
* Values in parentheses are used in Europe.
5.5 Camber (Edgewise Curvature)
5.5.1 Camber is measured by placing a length of strip
on a flat surface against the edge of a straight edge, as
shown in Figure 1. The straight edge shall be of
sufficient length to equal or exceed the length
traditionally used in the area or country of origin of the
material. The largest amount of separation of the strip
sample from the straight edge shall be measured.
Extreme care must be exercised with this test to ensure
that the sample illustrates a uniform camber (no reverse
curvature should be present in the sample), and also that
it is not bent or kinked, as this could result in a grossly
inaccurate measurement. The maximum camber per
length allowable are shown in Table 8.
Table 8
Width
Thickness
Max camber
allowed in 1 meter
Under 15 mm 0.1 mm to under 0.3 mm 1.8 mm (2.0 mm)
0.3 mm to under 1.0 mm 2.2 mm (2.5 mm)
1.0 mm to 2.0 mm 4.0 mm
15 mm to
55 mm
0.1 mm to under 0.3 mm 1.3 mm
0.3 mm to under 1.0 mm 2.0 mm
1.0 mm to 2.0 mm 3.0 mm
Over 55 mm
to 100 mm
0.1 mm to under 0.3 mm 1.0 mm
0.3 mm to under 1.0 mm 1.5 mm
1.0 mm to 2.0 mm 2.5 mm
SEMI G4-0302 © SEMI 1982, 2002 4
5.6 Flatness
Test Piece
Straight Edge 1000 mm
Length of Strip 1200 mm
Camber (max.)
Figure 1
Camber
5.6.1 Coil Set (Longitudinal Curl)
5.6.1.1 Coil set shall be measured by attaching a length
of strip, appropriate to the country or area of material
origin, to a flat vertical surface as shown in Figure 2.
The attachment shall be with a rigid block, wider than
the strip. The block shall be so rigid as to ensure
complete contact of the strip with the vertical surface.
The distance between the flat surface and the free-
hanging end of the strip (that is positioned for
maximum distance from the flat vertical surface) shall
be measured. The coil set shall be uniformly in the
direction of coiling. Lengths shall be appropriate to the
country or area of material origin. Maximum coil set for
appropriate lengths are shown in Tables 9 and 10.
Table 9
Inside Diame
ter of Coil
Thickness
Width
Max Coil
Set in 1 m
400 mm under 0.3 mm under 100 mm 100 mm
Table 10
Thickness Width Max Coil Set in 0.3 m
Under 0.3 mm up to 15 mm 60 mm
over 15 to 24 mm 50 mm
over 24 to 55 mm 45 mm
over 55 to 100 mm 40 mm
0.3 mm to 0.5 mm up to 15 mm 70 mm
over 15 to 24 mm 60 mm
over 24 to 55 mm 55 mm
over 55 to 100 mm 50 mm
* Table 10 is used in Europe.
5.6.2 Crossbow (Dish)
5.6.2.1 Crossbow shall be measured across the width of
the strip, as shown in Figure 3. Burrs shall be removed
or burr height excluded from this measurement.
Crossbow shall be measured with a tool maker’s
microscope or equivalent. Crossbow maxima are listed
in Tables 11 and 12.
Flat Vertical
Surface
Block
Coil Set
20 mm
1000 mm
Figure 2
Coil Set
Table 11
Width Thickness Crossbow Limit
under 15 mm 0.1 mm to under
0.3 mm
0.5% of width
0.3 mm to under
1.0 mm
1.0% of width
1.0 mm to 2.0 mm 1.5% of width
15 mm to 55 mm 0.1 mm to under
0.3 mm
0.5% of width
0.3 mm to under
1.0 mm
0.5% of width
1.0 mm to 2.0 mm 0.5% of width
over 55 mm to 100 mm 0.1 mm to under
0.3 mm
0.4% of width
0.3 mm to under
1.0 mm
0.4% of width
1.0 mm to 2.0 mm 0.4% of width