1、CEN EN*LOO5b-2 93 m 3404589 0054050 864 m EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10056-2 September 1993 UDC 669.14.018.29-423.2 : 621.753.1 Descriptors: Iron and steel products, angle irons, structural steels, dimensional tolerances, form tolerances English version Structural steel equ
2、al and unequal leg angles Part 2: %lerances on shape and dimensions Cornires ailes gales et ailes ingales en acier de construction Partie 2: Tolrances de formes et de dimensions Gleichschenklige und ungleichschenklige Winkel aus Stahl Teil 2: GrenzabmaBe und Formtoleranzen This European Standard was
3、 approved by CEN on 1993-08-30. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographieal references concerning such national
4、 standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notifi
5、ed to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
6、 CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36. B- 1050 Brussels O 1993 Copyright reserved to CEN members Ref. No. EN 10056-2 : 1993 E CEN EN*30056-2 93 3404589 0054053 7T0 Page 2 EN 10056-2 : 1993 For
7、eword This Part of this European Standard has been prepared by ECISS/TC 11 Sections : Tolerances and dimensions, the Secretariat of which is held by BSI. The discussions within ECISS/TC 11 were based on Euronorm 56 : 77 Hot rolled equal angles (with radiused root and toes) and Euronorm 57-78 Hot roi
8、led unequal angles (with radiused root and toes). This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at least by March 1994, and conflicting national standards shall be withdrawn at the latest by March 1994. Accordin
9、g to the CENXENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, United Kingdom. Contents Forew
10、ord 1 Scope 2 Normative references 3 Definitions 4 5 %lerance on mass 6 Tolerance on length able 1 Iblerances on dimensions, Merances on shape and dimensions squareness and straightness of structural steel equal and unequal leg angles Annex A (informative) Straightness measurement page 2 3 3 3 3 3 3
11、 (EN EN*10056-2 93 3404589 0054052 637 1 Scope This Fart of this European Standard specifies tolerances on shape dimensions and mass of hot-rolled structural steel equal and unequal leg angles. The sizes of these angles are given in EN 10056-1. These tolerances do not apply to equal and unequal leg
12、angles produced from stainless steel. NOTE. Until EN 10056-1 is published, either Euronorms 56 and 57 or the corresponding national standards may be used. 2 Normative references This Part of this European Standard incorporates by dated or undated reference, provisions from other publications. These
13、normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated
14、references the latest edition of the publication referred to applies. EN 10056-1 Structural steel equal and unequal leg angles - lblerances on shape und dimensions (under preparation) EN 10079 : 1992 Definition of steel products Euronorm 56 Hot rolled equal angles (with (1977) radiused root and toes
15、) Euronorm 57 Hot rolled unequal angles (with (1978) radiused root und toes) 3 Definitions For the purposes of this European Standard the definitions in EN 10079 apply. Page 3 EN 10056-2 : 1993 4 Tolerances on shape and dimensions 4.1 Leg length (a or b) The deviation from nominal on leg length shal
16、l be within the tolerance given in table 1. For unequal leg angles, the longer leg length (a) shall be used to determine the tolerance band. 4.2 Section thickness (t) The deviation from nominal on thickness shall be within the tolerances given in table 1. 4.3 Out-of-square (k) Out-of-squareness of t
17、he section shall not exceed the maximum given in table 1. For unequal leg angles, the longer leg length (a) shall be used to determine the tolerance band. 4.4 Straightness (4) The deviation from straightness shall not exceed the tolerances given in table 1. For unequal leg angles, the longer leg len
18、gth (a) shall be used to determine the tolerance band. 5 Tolerance on mass The deviation from the nominal mass of any individual piece shall not exceed: a) f 6 % for thicknesses for t I 4 mm; or b) f 4 % for thicknesses for t 4 mm. The deviation from the nominal mass is the difference between the ac
19、tual mass of the piece and the calculated mass. The calculated mass shall be determined using a density of 7,85 kg/dm3. 6 lblerance on length The tolerance on ordered length shall be either: a) f 50 mm; or b) +ioo where minimum lengths are required. CEN EN+L0056-2 93 m 3404589 0054053 573 m Page 4 E
20、N 1056-2 : 1993 hble 1. Tolerances on dimensions, squareness and straightness of structural steel equal and unequal leg angles Dimensions X X IY Squareness Deviation? h Yevia tion L Straightness Leg length Length mm a I 50 50 a I 100 100 a I 150 150 a I 200 200 a Out-of-square filerance mm f 1.0 f 2
21、.0 f 3.0 f 4.0 + 6.0 - 4.0 Leg length a) mm a I 100 100 a I 150 150 c a 5 200 200 a Leg length a mm a I 150 150 a I 200 200 a Tolerance over full bar length P mm 0.4 % L 0.2 96 L 0.1 % L Section thickness Ihickness t) mm t15 5t510 10 t I 15 15 I t Tolerance mm f 0.50 f 0.75 f 1.00 f 1.20 iblerance k
22、) mm 1.0 1.5 2.0 3.0 Leg length z nm x I 150 150 a I 200 200 a Tolerance over any Part Length 3000 CEN EN*10056-2 93 D 3404589 0054054 40T Page 5 EN 10056-2 : 1993 Annex A (informative) Straightness measurement Straightness measurement requires a reference straight edge from which deviations in sect
23、ion straightness are measured. A taut string line is an acceptable straight edge provided that deviations in the horizontal plane only are measured. Measurement is carried out as follows. The angle is placed on one leg on a flat surface and the string is taken along the toe of the other leg of the unconstrained angle for the length under consideration.
