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ANSI A320 L7 Carbon Steel Fully Threaded Studs

    Buy cheap ANSI A320 L7 Carbon Steel Fully Threaded Studs from wholesalers
     
    Buy cheap ANSI A320 L7 Carbon Steel Fully Threaded Studs from wholesalers
    • Buy cheap ANSI A320 L7 Carbon Steel Fully Threaded Studs from wholesalers
    • Buy cheap ANSI A320 L7 Carbon Steel Fully Threaded Studs from wholesalers
    • Buy cheap ANSI A320 L7 Carbon Steel Fully Threaded Studs from wholesalers
    • Buy cheap ANSI A320 L7 Carbon Steel Fully Threaded Studs from wholesalers

    ANSI A320 L7 Carbon Steel Fully Threaded Studs

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    Brand Name : QBH
    Model Number : 1/4--4inch
    Certification : ISO9001
    Price : Negotiation
    Payment Terms : L/C, T/T,OA
    Supply Ability : 600TON/MONTH
    Delivery Time : 30days
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    ANSI A320 L7 Carbon Steel Fully Threaded Studs

    ANSI A320 L7 Carbon Steel Fully Threaded Studs

    Originally approved in 1948, the ASTM A320 specification covers alloy steel and stainless steel bolting materials for low temperature service. This standard covers rolled, forged, or strain hardened bars, bolts, screws, studs, and stud bolts used for pressure vessels, valves, flanges, and fittings. Like the ASTM A193 specification, unless otherwise specified, the 8UN thread series is specified on fastener larger than 1” in diameter.

    Below is a basic summary of a few of the common grades within the ASTM A320 specification. A number of other less common grades of ASTM A320 exist, but not covered in the description below.

    Screw Thread
    d
    1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4 7/8 1 1-1/8 1-1/4 1-3/8
    d
    PP UNC
    UNF
    8UN
    u max UNC
    UNF
    8UN
    0.2500 0.3125 0.3750 0.4375 0.5000 0.5625 0.6250 0.7500 0.8750 1.0000 1.1250 1.2500 1.3750
    20 18 16 14 13 12 11 10 9 8 7 7 6
    28 24 24 20 20 18 18 16 14 12 12 12 12
    - - - - - - - - - - 8 8 8
    0.100 0.111 0.125 0.143 0.154 0.167 0.182 0.200 0.222 0.250 0.286 0.286 0.333
    0.071 0.083 0.083 0.100 0.100 0.111 0.111 0.125 0.143 0.167 0.167 0.167 0.167
    - - - - - - - - - - 0.250 0.250 0.250
    Screw Thread
    d
    1-1/2 1-5/8 1-3/4 1-7/8 2 2-1/4 2-1/2 2-3/4 3 3-1/4 3-1/2 3-3/4 4
    d
    PP UNC
    UNF
    8UN
    u max UNC
    UNF
    8UN
    1.5000 1.6250 1.7500 1.8750 2.0000 2.2500 2.5000 2.7500 3.0000 3.2500 3.5000 3.7500 4.0000
    6 - 5 - 4-1/2 4-1/2 4 4 4 4 4 4 4
    12 - - - - - - - - - - - -
    8 8 8 8 8 8 8 8 8 8 8 8 8
    0.333 - 0.400 - 0.444 0.444 0.500 0.500 0.500 0.500 0.500 0.500 0.500
    0.167 - - - - - - - - - - - -
    0.250 0.250 0.250 0.250 0.250 0.250 0.250 0.250 0.250 0.250 0.250 0.250 0.250

    A320 Grades

    L7 Alloy steel AISI 4140/4142 Quenched and tempered
    L43 Alloy steel AISI 4340 Quenched and tempered
    B8 Class 1 Stainless steel AISI 304, carbide solution treated
    B8M Class 1 Stainless steel AISI 316, carbide solution treated
    B8 Class 2 Stainless steel AISI 304, carbide solution treated, strain hardened
    B8M Class 2 Stainless steel AISI 316, carbide solution treated, strain hardened

    A320 Mechanical Properties

    Grade Diameter Tensile, ksi, min Yield, ksi, min Charpy Impact 20-ft-lbf @ temp Elong, %, min RA, %, min
    L7 Up to 212 125 105 -150° F 16 50
    L43 Up to 4 125 105 -150° F 16 50
    Class 1: BC, B8C, B8M, B8P, B8F, B8T, B8LN, B8MLN All 75 30 N/A 30 50
    Class 1A: B8A, B8CA, B8MA, B8PA, B8FA, B8TA, B8LNA, B8MLNA All 75 30 N/A 30 50
    Class 2: B8, B8C, B8P, B8F, B8T Up to 34 125 100 N/A 12 35
    78 - 1 115 80 N/A 15 35
    118 - 114 105 65 N/A 20 35
    138 - 112 100 50 N/A 28 45
    Class 2: B8M Up to 34 110 95 N/A 15 45
    78 - 1 100 80 N/A 20 45
    118 - 114 95 65 N/A 25 45
    138 - 112 90 50 N/A 30 45

    A320 Chemical Properties

    Element L7 (AISI 4140) L43 (AISI 4340) B8 (AISI 304) B8M (AISI 316)
    Carbon 0.38 - 0.48% 0.38 - 0.43% 0.08% max 0.08% max
    Manganese 0.75 - 1.00% 0.75 - 1.00% 2.00% max 2.00% max
    Phosphorus, max 0.035% 0.035% 0.045% 0.045%
    Sulfur, max 0.040% 0.040% 0.030% 0.030%
    Silicon 0.15 - 0.35% 0.15 - 0.35% 1.00% max 1.00% max
    Chromium 0.80 - 1.10% 0.70 - 0.90% 18.0 - 20.0% 16.0 - 18.0%
    Nickel 1.65 - 2.00% 8.0 - 11.0% 10.0 - 14.0%
    Molybdenum 0.15 - 0.25% 0.20 - 0.30% 2.00 - 3.00%

    A320 Recommended Hardware

    Grade Nuts Washers
    L7 A194 Grade 4 or 7 F436
    L43 A194 Grade 4 or 7 F436
    B8 Class 1 A194 Grade 8 SS304
    B8M Class 1 A194 Grade 8M SS316
    B8 Class 2 A194 Grade 8 SS304
    B8M Class 2 A194 Grade 8M SS316
    Strain hardened nuts available as a supplementary requirement

    Specification

    A threaded rod, also known as a stud, is a relatively long rod that is threaded on both ends; the thread may extend along the complete length of the rod. They are designed to be used in tension. Threaded rod in bar stock form is often called all-thread.

    All thread rod, commonly referred to as fully threaded rod, redi-rod, continuously threaded rod, TFL rod, and abbreviated ATR is used for general purpose fastening for anything from an anchor bolt to a through bolt. A variety of grades and materials are available.

    Materials and Chemical compstition


    42CRMO

    CHEMICAL COMPOSI %
    C Si Mn P S Cr Ni Cu Mo
    0.42 0.27 0.92 0.013 0.004 1.01 0.03 0.04 0.2

    stainless steel

      化学成分CHEMICAL COMPOSI(% )
    Type C碳 Si硅 Mn锰 P磷 S硫 Ni镍 Cr铬 Mo钼 Cu铜 Others
     
    201Cu 0.08 1.00 7.5-10 0.06 0.03 4.00-6.00 14.0-17.0   2.0-3.0  
    201 0.15 1.00 8.50 0.06 0.03 3.50-5.50 16.0-18.0     N≤0.25
    130M/202 0.15 1.00 7.5-10 0.06 0.03 4.00-6.00 17.0-19.0     N≤0.25
    202 0.15 1.00 7.5-10 0.06 0.03 4.00-6.00 17.0-19.0      
    301 0.15 1.00 2.00 0.045 0.03 5.00-8.00 16.0-18.0      
    302 0.15 1.00 2.00 0.045 0.03 8.00-10.0 17.0-19.0      
    XM7
    (302HQ)
    0.08 1.00 2.00 0.045 0.03 8.50-10.5 17.0-9.00   3.0-4.0  
    303 0.15 1.00 2.00 0.20 ≥0.15 8.00-10.0 17.0-19.0 ≤0.60    
    303Cu 0.15 1.00 3.00 0.20 ≥0.15 8.0-10.0 17.0-19.0 ≤0.60 1.5-3.5  
    304 0.08 1.00 2.00 0.045 0.03 8.00-10.0 18.0-20.0      
    304H 0.08 1.00 2.00 0.045 0.03 8.0-10.0 18.0-20.0      
    304HC 0.08 1.00 2.00 0.045 0.03 8.00-10.0 17.0-19.0   2.0-3.0  
    304HCM 0.08 1.00 2.00 0.045 0.03 8.0-10.0 17.0-19.0   2.5-4.0  
    304L 0.03 1.00 2.00 0.045 0.03 9.0-13.0 18.0-20.0      
    304M 0.06 1.00 2.00 0.045 0.03 8.50-10.0 18.0-20.0      
    305 0.12 1.00 2.00 0.045 0.03 10.5-13.0 17.0-19.0      
    305J1 0.08 1.00 2.00 0.045 0.03 11.0-13.5 16.5-19.0      
    309S 0.08 1.00 2.00 0.045 0.03 12.0-15.0 22.0-14.0      
    310S 0.08 1.50 2.00 0.045 0.03 19.0-22.0 24.0-26.0      
    314 0.25 15.-3.0 2.00 0.040 0.03 19.0--22.0 24.0-26.0      
    316 0.08 1.00 2.00 0.045 0.03 10.0-14.0 16.0-18.0 2.0-3.0    
    316Cu 0.03 1.00 2.00 0.045 0.03 10.0-14.0 16.0-18.0 2.0-3.0 2.0-3.0  
    316L
    (12Ni)
    0.03 1.00 2.00 0.045 0.03 12.0-15.0 16.0-18.0 2.0-3.0    
    316L
    (10Ni)
    0.03 1.00 2.00 0.045 0.03 10.0-14.0 16.0-18.0 2.0-3.0    
    321 0.08 1.00 2.00 0.045 0.03 9.00-13.0 17.0-19.0   Ti≤5*C%
    410 0.15   1.00   0.03   11.5-13.5      
    416 0.15   1.25   ≥0.15   12.0-14.0      
    420 0.26-0.4   1.00   0.03   12.0-14.0      
    410L 0.30 1.00 1.00 0.040 0.03   11.5-13.5      
    430 0.12 0.75 1.00 0.040 0.03   16.0-18.0      
    430F 0.12 1.00 1.25 0.060 0.15   16.0-18.0      
    631(J1) 0.09 1.00 1.00 0.040 0.03 6.50-8.50 16.0-18.0     AL 0.75-1.5
    2520 0.08 1.00 2.00 0.035 0.03 19.0-22.0 24.0-26.0      
    410 0.015 1.00 1.00 0.04 0.03   11.5-13.5      

    Finish

    PLAIN ZP YZP BLACK HDG DACROMET GEOMET CHROME NICKEL AND SO ON

    PACKING

    QBH BULK

    20-25KG/CTN,36CTNS/PALLET

    20-30KG/BAGS,36BAGS/PALLET

    ONE TON/BOXES

    50KG/ IRON DRUM,12 IRON DRUMS/PALLET

    QBH SMALL PACKING

    Packing in small boxes according to customer’s requirements

    Packing in plastic bag according to customer’s requirements

    QBH PALLET TYPE

    SOLID WOOD FUMIGATION PALLET

    EURO Pallet

    THREE SPLINT PALLET

    WOODEN BOX

    The advantages of QBH

    • QBH brand sales to the main quality assurance.
    • Years of export trade management, excellent service, word-of-mouth guarantee.
    • By working with TUV,escort for quality.
    • Customization of non-standard parts can be made according to customer's requirements and drawings.
    • For quality customers,we can provide a certain credit period.

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