At the option the manufacturer the elements aluminium, titanium, vanadium and niobium may be added singly or in combination for grain control purposes.
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Thickness of ruling section tR
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|||||
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Diameter in mm
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tR ≤ 160mm
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160< tR ≤330mm
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330<tR≤660mm
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Re min. (N/mm2)
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680
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630
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490
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Rm min. (N/mm2)
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900
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850
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700
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A % min.
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l-longitudinal
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12
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13
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15
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tr -transverse
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8
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9
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11
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KV min (J)
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l-longitudinal
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35
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35
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35
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tr -transverse
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20
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20
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20
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Source:
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