Tolerncia de espessuras de Chapas.pdf

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  • CURSO DE ENGENHARIA MECNICA DISCIPLINA DE DESENHO TCNICO II

    Prof. Airton C. Bortoluzzi

    Tolerncia de espessuras de Chapas

    Bobinas e Chapas Finas a Frio - Espessura (mm) NBR 11888

    Bitola MSG Padro Mnima Mxima Peso Kg/m

    30 0.30 0.25 0.35 2.40

    29 0.34 0.29 0.39 2.72

    28 0.38 0.33 0.43 3.04

    26 0.45 0.40 0.50 3.60

    24 0.60 0.52 0.68 4.80

    22 0.75 0.67 0.83 6.00

    20 0.90 0.81 0.99 7.20

    19 1.06 0.96 1.16 8.48

    18 1.20 1.10 1.30 9.60

    16 1.50 1.37 1.63 12.00

    15 1.70 1.57 1.83 13.60

    14 1.90 1.72 2.08 15.20

    13 2.25 2.07 2.43 18.00

    12 2.65 2.40 2.90 21.20

    11 3.00 2.75 3.25 24.00

    Bobinas e Chapas Finas a Quente - Espessura (mm) NBR 11888

    Bitola MSG Padro Mnima Mxima Peso Kg/m

    18 1.20 1.05 1,35 9.60

    16 1.50 1.35 1.65 12.00

    14 2.00 1.80 2.20 16.00

    13 2.25 2.05 2.45 18.00

    12 2.65 2.44 2.86 21.20

    11 3.00 2.79 3.21 24.00

    10 3.35 3.12 3.58 26.80

    9 3.75 3.52 3.98 30.00

    8 4.25 4.00 4.50 34.00

    7 4.50 4.25 4.75 36.00

    3/16 4.75 4.50 5.00 38.00

    6 5.00 4.75 5.25 40.00

    Bobinas e Chapas Grossas - Espessura (mm) NBR 11889

    Bitola MSG Padro Mnima Mxima Peso Kg/m

    1/4 6.30 6.05 6.75 50.40

    5/16 8.00 7.75 8.45 64.00

    3/8 9.50 9.25 10.00 76.00

    1/2 12.50 12.25 13.05 100.00

    Chapas Grossas - Espessura (mm) NBR 11889

    Bitola (pol.) Nominal Mnima Mxima Peso (kg/m)

    7/32 5.60 5.30 6.40 43.96

    1/4 6,30 6.00 7.20 49.46

    9/32 7.10 6.80 8.00 55.74

  • 5/16 8,00 7.70 8.90 62.80

    3/8 9,50 9.20 10.50 74.58

    7/16 11.20 11.00 12.20 87.92

    1/2 12,50 12.20 13.50 98.13

    9/16 14.00 13.70 15.00 109.90

    5/8 16,00 15.70 17.20 125.60

    3/4 19,00 18.70 20.20 149.15

    7/8 22,40 22.10 23.70 175.84

    1 25,00 24.70 26.30 196.25

    1 1/4 31,50 31.20 34.00 247.28

    1 1/2 37,50 37.20 40.00 249.38

    1 3/4 45.00 44.70 47.50 353.25

    2 50,00 49.70 52.50 392.50

    2 1/4 56.00 55.70 59.30 439.60

    2 1/2 63,00 62.70 66.30 510.25

    2 3/4 71.00 70.70 74.30 557.35

    3 75,00 74.70 78.30 588.75

    3 3/16 80.00 79.70 83.80 628.00

    3 3/8 85.00 84.70 88.80 667.25

    3 9/16 90.00 89.70 93.80 706.50

    3 3/4 95.00 94.70 98.80 745.75

    4 100,00 99.70 103.80 785.00

    Chapas Zincadas (Galvanizadas) - Espessura (mm) NBR 7013

    Bitola MSG Padro Mnima Mxima Peso (kg/m)

    32 0.30 0.23 0.37 2.40

    30 0.35 0.28 0.42 2.80

    28 0.43 0.36 0.50 3.44

    26 0.50 0.43 0.57 4.00

    24 0.65 0.55 0.75 5.20

    22 0.80 0.70 0.90 6.40

    20 0.95 0.83 1.07 7.60

    19 1.11 0.96 1.26 8.88

    18 1.25 1.10 1.40 10.00

    16 1.55 1.38 1.72 12.40

    14 1.95 1.73 2.17 15.60

    13 2.30 2.08 2.52 18.40

    12 2.70 2.43 2.97 21.60

    Normas ABNT: NBR 11888 - Bobinas e chapas finas a frio e a quente de ao-carbono e ao de baixa liga e alta resistncia - Requisitos gerais NBR 11889 - Bobinas e chapas grossas de ao-carbono e de ao de baixa liga e alta resistncia - Requisitos NBR 7013 - Chapas e bobinas de ao revestidas pelo processo contnuo de imerso a quente - Requisitos gerais

  • TABELA COMPARATIVA DAS BITOLAS DE CHAPAS

    BITOLA (#)

    ABNT (mm)

    POLEGADA (inch)

    USG (mm)

    MSG (mm)

    DIN (mm)

    7-0 --- 1/2" 12,700 --- --- 5-0 --- 7/16 11,112 --- --- 4-0 --- 13/32 10,319 --- --- 3-0 --- 3/8 9,525 --- --- 2-0 --- 11/32 8,730 --- --- 0 --- 5/16 7,938 --- --- 1 --- 9/32 7,144 --- --- 2 --- 17/64 6,747 --- --- 3 6,00 1/4" 6,350 6,073 --- 4 5,60 15/64 5,953 5,695 5,50 5 5,30 7/32 5,556 5,314 --- 6 5,00 13/64 5,159 4,935 5,00 --- 4,75 --- --- --- --- 7 4,50 3/16 4,762 4,554 4,50 --- 4,25 --- --- --- 4,25 8 --- 11/64 4,360 4,176 --- --- 4,00 --- --- --- 4,00 9 3,75 5/32 3,968 3,797 3,75 --- --- --- --- --- 3,50 10 3,35 9/64 3,571 3,416 3,25 11 3,00 1/8 3,175 3,038 3,00 --- --- --- --- --- 2,75 12 2,65 7/64 2,778 2,657 2,50 13 2,25 3/32 2,381 2,278 2,25 --- 2,00 --- --- --- 2,00 14 1,90 5/64 1,984 1,897 --- 15 1,70 9/128 1,786 1,709 --- 16 1,50 1/16 1,587 1,519 1,50 17 1,40 9/160 1,428 1,367 1,38 18 1,25 1/20 1,270 1,214 1,25 --- 1,18 --- --- --- 1,13 19 1,06 7/160 1,111 1,062 --- --- 1,00 --- --- --- 1,00 20 0,90 3/80 0,952 0,912 --- --- 0,88 --- --- --- 0,88 21 0,85 11/320 0,873 0,836 --- 22 0,75 1/32 0,793 0,759 0,75 23 0,67 9/320 0,714 0,683 0,63 24 0,60 1/40 0,635 0,607 0,56 25 0,53 7/320 0,555 0,531 0,50 26 0,45 3/160 0,476 0,455 0,44 27 0,43 11/640 0,436 0,417 --- 28 0,38 1/64 0,396 0,378 0,38 29 0,37 9/640 0,357 0,343 --- 30 0,30 1/80 0,317 0,305 0,32 31 --- --- 0,277 0,267 --- 32 --- --- 0,258 0,246 --- 33 --- --- 0,238 0,229 --- 34 --- --- 0,218 0,209 --- 35 --- --- 0,198 0,190 ---

  • OBSERVAES: CHAPAS GROSSAS: so as chapas com espessuras compreendidas entre as

    bitolas 7-0 e 5. CHAPAS FINAS: so as chapas com espessuras compreendidas entre as

    bitolas 6 e 35. ABNT (Associao Brasileira de Normas Tcnicas): identifica as espessuras

    de chapas normalizadas no Brasil e normalmente utilizadas no mercado nacional.

    DIN (Deustches Institut fr Normung): identifica as espessuras de chapas normalizadas na Alemanha e normalmente utilizadas no mercado europeu.

    USG (United States Gauge): identifica as espessuras de chapas normalizadas nos Estados Unidos e normalmente utilizadas no mercado americano e mundial.

    MSG (Manufacturers Standard Gauge): identifica uma outra srie de espessuras de chapas utilizadas no mercado americano e mundial, sendo similar USG.

    Padro para arames e fios:

    BWG significa Birmingham Wire Gauge (medida de arame de Birminghan), porm esta escala conhecida tambm como Stubs Iron Wire.

    AWG (American Wire Gauge), escala americana utilizada geralmente para fios no ferrosos.

    SWG (Imperial Standard Wire Gauge) que uma escala tambm britnica, derivada da prpria BWG.

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