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    ASTM A861 - 04(2017)

    Standard Specification for High-Silicon Iron Pipe and Fittings

    Active Standard ASTM A861 | Developed by Subcommittee: A04.12

    Book of Standards Volume: 01.02

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    Abstract

    This specification covers high-silicon iron pipe and pipe fittings intended for corrosion-resistant service for both above- and below-grade construction. The castings shall be true to pattern, reasonable smooth, and free from defects that would make the castings unfit for the use for which they are intended. The material shall conform to the chemical composition requirements specified. All centrifugally cast high-silicon iron pipe shall be supplied in the as-cast condition. All other pipe and fittings shall be supplied in the stress-relieved condition; the stress relieving procedures are presented. Acid-proof joints for hub/plain-end pipe shall require the use of an acid-proof rope packing. No-hub pipe and fittings shall require a special acid resistant mechanical joint coupling. High-silicon iron pipe can be cut with either manual or hydraulic snap cutters. Hydrostatic testing shall be conducted on all castings.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. Scope

    1.1 This specification covers high-silicon iron pipe and pipe fittings intended for corrosion-resistant service for both above- and below-grade construction.

    1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

    1.3 Pipe and pipe fittings shall be the no-hub (MJ) or the hub and plain end design.

    1.4 Pipe and pipe fittings shall be of the sizes specified in Table 1 and Table 2 and Figs. 1-71 or other sizes that shall be permitted to conform to the requirements given herein.

    TABLE 1 Tolerances for High-Silicon Iron Hub/Plain-End Pipe

    Note 1: 1 in. = 25.4 mm.

    Size, in.

    Wall Thickness, in.

    ID Tolerance, in.

    OD Tolerance, in.

     2

    ±1/32 

    ±1/32 

    ±1/32 

     3

    ±1/32 

    ±1/32 

    ±1/32 

     4

    ±1/32 

    ±1/32 

    ±1/32 

     6

    ±1/32 

    ±1/32 

    ±3/64 

     8

    ±1/32 

    ±1/8  

    ±1/8  

    10

    ±1/8  

    ±1/8  

    ±1/8  

    12

    ±1/8  

    ±1/8  

    ±1/8  

    15

    ±1/8  

    ±1/8  

    ±1/8  

    TABLE 2 Tolerances for High-Silicon Iron Fittings

    Note 1: 1 in. = 25.4 mm.

    Size, in.

    ID Tolerance,
    in.

    OD Tolerance,
    in.

    Stop Lug Depth
    Tolerance, in.

       11/2 

    ±1/16 

    ±1/16 

    ±1/16 

       11/2 × 11/2 

    ±1/16 

    ±1/16 

    ±1/16 

       2

    ±1/16 

    ±1/16 

    ±1/16 

       2 × 11/2 

    ±1/16 

    ±1/16 

    ±1/16 

       2 × 2

    ±1/16 

    ±1/16 

    ±1/16 

       3

    ±1/16 

    ±1/16 

    ±1/16 

       3 × 11/2 

    ±1/16 

    ±1/16 

    ±1/16 

       3 × 2

    ±1/16 

    ±1/16 

    ±1/16 

       3 × 3

    ±1/16 

    ±1/16 

    ±1/16 

       4

    ±1/16 

    ±1/16 

    ±1/16 

       4 × 11/2 

    ±1/16 

    ±1/16 

    ±1/16 

       4 × 2

    ±1/16 

    ±1/16 

    ±1/16 

       4 × 3

    ±1/16 

    ±1/16 

    ±1/16 

       4 × 4

    ±1/16 

    ±1/16 

    ±1/16 

    TABLE 3 Chemical Composition

    Element

    Composition, Weight %

    Grade 1

    Grade 2

    Carbon

     0.65–1.10

     0.75–1.15

    Manganese

     1.50 max

     1.50 max

    Silicon

    14.20–14.75

    14.20–14.75

    Chromium

     0.50 max

     3.25–5.00

    Molybdenum

     0.50 max

     0.40-0.60

    Copper

     0.50 max

     0.50 max

    FIG. 1 No-Hub Pipe (MJ)

    No-Hub Pipe (MJ)No-Hub Pipe (MJ)

    Size, in.

    J, in.

    F, in.

    t, in.

    11/2 

    23/16 (2.19)

    84

    5/16 

    2 

    211/16 (2.69)

    84

    5/16 

    3 

    349/64 (3.77)

    84

    5/16 

    4 

    449/64 (4.77)

    84

    5/16 

    Note 1: 1 in. = 25.4 mm.

    FIG. 2 Quarter Bends

    Quarter BendsQuarter Bends

    Size, in.

    D, in.

    ID, in.

    OD, in.

    Stop Lug
    Depth (P), in.

    11/2 

    41/4 

    11/2 

    23/16 (2.19)

    11/32 

    2

    41/2 

    2

    25/8 (2.62)

    11/32 

    2 × 11/2 

    43/16 × 41/2 

    2 × 11/2 

    25/8 × 23/16 

    11/32 

    3

    5

    3

    33/4 (3.75)

    11/32 

    4

    51/2 

    4

    43/4 (4.75)

    11/32 

    Note 1: 1 in. = 25.4 mm.

    FIG. 3 Sixth Bends

    Sixth BendsSixth Bends

    Size, in.

    D, in.  

    ID, in.  

    OD, in.

    Stop Lug
    Depth (P), in.

       11/2 

       3

       11/2 

       23/16 

    11/32 

       2

       31/4 

       2

       25/8 

    11/32 

       3

       31/2 

       3

       33/4 

    11/32 

       4

       33/4 

       4

       43/4 

    11/32 

    Note 1: 1 in. = 25.4 mm.

    FIG. 4 Return Bends

    Return BendsReturn Bends

     Size,
     in.

     C,
     in.

    D,
    in.

     F,
     in.

    R,
    in.

    ID,
    in.

    OD,
    in.

    Stop Lug Depth (P), in.

      11/2 
      2

     4
     43/4 

    2
    2

     53/32 
     511/16 

    2
    23/8 

    11/2 
    2

      23/16 
      25/8 

    11/32 
    11/32 

    Note 1: 1 in. = 25.4 mm.

    FIG. 5 Double-Branch Quarter Bend

    Double-Branch Quarter BendDouble-Branch Quarter Bend

    Size,
    in.

    D,
    in.

    E,
    in.

    ID,
    in.

    OD,
    in.

    Stop Lug Depth (P), in.

    11/2 

    37/8 

    33/4 

    11/2 

    23/16 

    11/32 

    Note 1: 1 in. = 25.4 mm.

    FIG. 6 Eight Bends

    Eight BendsEight Bends

      Size,
      in.

      D,
      in.

      ID,
      in.

      OD,
      in.

    Stop Lug Depth (P), in.

      11/2 

      21/2 

      11/2 

      23/16 

    11/32 

      2

      23/4 

      2

      25/8 

    11/32 

      3

      3

      3

      33/4 

    11/32 

      4

      31/4 

      4

      43/4 

    11/32 

    Note 1: 1 in. = 25.4 mm.

    FIG. 7 Sixteenth Bends

    Sixteenth BendsSixteenth Bends

      Size,
      in.

      D,
      in.

      ID,
      in.

      OD,
      in.

    Stop Lug Depth (P), in.

      11/2 

      2

      11/2 

      23/16 

    11/32 

      2

      21/8 

      2

      25/8 

    11/32 

      3

      21/4 

      3

      33/4 

    11/32 

      4

      23/8 

      4

      43/4 

    11/32 

    Note 1: 1 in. = 25.4 mm.

    FIG. 8 Long-Sweep Quarter Bends

    Long-Sweep Quarter BendsLong-Sweep Quarter Bends

    FIG. 9 Sanitary Y Branches

    Sanitary Y BranchesSanitary Y Branches

    Size,
    in.

    D,
    in.

    F,
    in.

    G,
    in.

     ID,
     in

    OD,
    in.

    Stop Lug Depth (P), in.

    1/2 × 11/2 

    45/8 

     61/2 

    17/8 

    11/2 × 11/2 

    23/16 × 23/16 

    11/32 

    2 × 11/2 

    47/8 

     61/2 

    15/8 

    2 × 11/2 

    25/8 × 23/16 

    11/32 

    2 × 2

    45/8 

     63/8 

    2

    2 × 2

    25/8 × 25/8 

    11/32 

    3 × 11/2 

    55/8 

     61/2 

    11/4 

    3 × 11/2 

    33/4 × 23/16 

    11/32 

    3 × 2

    57/8 


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    Other Standards

    National Motor Freight Classification

    ASTM Standards

    A518/A518M Specification for Corrosion-Resistant High-Silicon Iron Castings

    E350 Test Methods for Chemical Analysis of Carbon Steel, Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, and Wrought Iron

    E351 Test Methods for Chemical Analysis of Cast Iron--All Types

    ICS Code

    ICS Number Code 23.040.10 (Iron and steel pipes); 23.040.40 (Metal fittings)

    UNSPSC Code

    UNSPSC Code 40170000(Pipe piping and pipe fittings); 31100000(Castings and casting assemblies)

    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/A0861-04R17

    Citation Format

    ASTM A861-04(2017), Standard Specification for High-Silicon Iron Pipe and Fittings, ASTM International, West Conshohocken, PA, 2017, www.astm.org

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