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Dimensions and Tolerances of Bright Steel Bars extract from EN 10278
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FLATS |
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Carbon max
0,20%
and Free cutting steels low
C% |
Carbon >
0,20%
and all steels |
|
width |
limit deviation |
limit deviation |
|
mm |
mm |
mm |
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<
18 |
+ 0 |
- 0,11 |
+ 0 |
- 0,22 |
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> 18 |
<
30 |
+ 0 |
- 0,13 |
+ 0 |
- 0,26 |
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> 30 |
<
50 |
+ 0 |
- 0,16 |
+ 0 |
- 0,32 |
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> 50 |
<
80 |
+ 0 |
- 0,19 |
+ 0 |
- 0,38 |
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> 80 |
<
100 |
+ 0 |
- 0,22 |
+ 0 |
- 0,44 |
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> 100 |
<
150 |
+ 0,50 |
- 0,50 |
+ 1,00 |
- 1,00 |
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> 150 |
<
200 |
+ 1,00 |
- 1,00 |
+ 2,00 |
- 2,00 |
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> 200 |
<
300 |
+ 2,00 |
- 2,00 |
+ 4,00 |
- 4,00 |
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> 300 |
<
400 |
+ 2,50 |
- 2,50 |
+ 5,00 |
- 5,00 |
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thickness |
limit deviation |
limit deviation |
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mm |
mm |
mm |
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> 3 |
<
6 |
- 0,075 |
- 0,15 |
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> 6 |
<
10 |
- 0,090 |
- 0,18 |
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> 10 |
<
18 |
- 0,11 |
- 0,22 |
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> 18 |
<
30 |
- 0,13 |
- 0,26 |
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> 30 |
<
50 |
- 0,16 |
- 0,32 |
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> 50 |
<
60 |
- 0,19 |
- 0,38 |
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> 60 |
<
80 |
- 0,30 |
- 0,60 |
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> 80 |
<
100 |
- 0,35 |
- 0,70 |
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FLATS Straightness
tolerances |
dimensional inspection
shall be carried out as follows |
width
mm |
Steels |
max deviation
for
w
and
t |
a) round bars: not less than 150 mm from the end |
C% < 0,25
mm/m |
C%
>
0,25
quenched and tempered |
stainless,
bearings, tools |
b) round bars cut to length: not less than > 10 mm from the end |
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< 120 |
1,5 |
1,5 |
1,5 |
w |
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|
1,5 |
2,0 |
2,0 |
t |
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>
120
w / t < 10 |
1,5 |
2,0 |
2,0 |
w |
c) shapes other than round: not less than > than 25 mm from the end |
|
2,0 |
2,5 |
2,5 |
t |
|
> 120
w / t > 10 |
2,0 |
2,5 |
2,5 |
w |
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2,5 |
3,0 |
3,0 |
t |
w
= width |
t
= thickness |
w / t = ratio |
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SQUARES - HEXAGONS Straightness
tolerances |
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dimensions
mm |
mm/m |
mm/m |
mm/m |
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< 75 |
1,0 |
2,0 |
1,0 |
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> 75 |
1,5 |
2,5 |
1,5 |
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ROUNDS Straightness
tolerances |
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all the
dimensions |
mm/m |
mm/m |
mm/m |
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1,0 |
1,5 |
1,0 |
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