Bolts and nuts made from ferritic steels
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.:..A"'D 2000-MEifKOlaltAppendix 1 to AD 2000-Merkblatt W 7
Note on 2.2The materials X22C,MoV12·,.0T2 ar>d Xl 9CrMoVNbN 11-1 as specified In OIN EN 10269 have not belln inclU<led as
Steel grade 42CrM<>4 (1.7225) as specified In DIN EN, 0269 is Intertdlld t", working temperatures of up 10 500 'C
In conlinuous operat;"".NolI! on 2.2 and 2.3 Steel grade 25CrM<:>4 (1.721a) as"l'e<:ilied in DIN EN 10269 is suilablll 10< w<>rklng temperatures of -60'C to
lIlarll have been no known cases ol application. II these ma·'erial. alII~slld In Individual ropMS f", boRs arld nuts Pfoduced by machining. the long pfoduct shall be subjected 10 an ull,asonic lest. All the bolts and nul. shall undergo a sur·
400·C. For uso at working temperatures below -10·C,AD 2CiOO-Merl<blatl W 10 shan be applied.
face crack lllsl in the dlllivery condition.
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