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ASTM A320 Grade L70

ASTM A320 Grade L70
  • Sizes in Stock: M3 to M80
  • Material : Alloy Steel
  • Elements : Chromium, Manganese, Molybdenum
  • Standards : ASME B18 2.1
  • Uses: Building & Construction
  • Surface Finish : Teflon & Xylon Coating
  • Environments : Cold Temperature
  • Manufacturing Grade : AISI 4140/AISI 4140H
  • Sizes Can Be Manufacture: Up to M120
  • Test : Dimensional Inspection
  • Type of Steel : Chromium Molybdenum
  • Origin : Made in India
  • Certificate : Third Party Inspection Report
  • Production Capacity : 200 Tons/Month

ASME SA320 Gr L70 Stud Bolts for Cold Temperature

ASTM A320 Grade L70 material designed for low-temperature applications. ASME SA320 Gr L70 stud bolts known for its heat-treated AISI 4140/AISI 4140H (chromium molybdenum).


Table of Content


Ready to Export

DIC

DIC

  • M14 Stud Bolts
  • Tokyo, Japan
Johnson Matthey

Johnson Matthey

  • M16 Stud Bolts
  • London, UK

ASTM A320 Grade L70 Specification

Size In Ready Stock

Size In Ready Stock

  • A320 L70 Stud Bolts = M6 To M100
L70 Stud Bolts Threads

L70 Stud Bolts Threads

  • Double End, Fully or Fine Threaded
Process Method

Process Method

  • Hot forging
  • CNC Machine
  • Cold forging
Characteristics

Characteristics

  • Low Temperature Performance
  • High Tensile Strengths
  • Chromium Molybdenum Steel
Inspection & Testing

Inspection & Testing

  • Hardness Testing
  • Corrosion Test
  • Impact Test
Application

Application

  • Low Temperature Services
  • Petrochemical
  • Heat Exchangers
Packaging Types

Packaging Types

  • Wooden Cases
  • Carton Box
  • Custom
Origin of Raw Material

Origin of Raw Material

  • German
  • Janpanese
  • European


Manufacturer of A320 Grade L70 Hex Bolts From American Sourced Raw Material


An ISO certified A320 L70 stud bolts manufacturer in India, We offer a range of ASME SA320 Grade L70 hex bolts for cold temperature environments and petrochemical.


L70 Stud Bolts Tensile Strength

  • 125 ksi
  • 860 MPa

Hardness for ASTM A320 Gr L70 Material

Brinell Hardness Rockwell Hardness
321 HBW 35 HRC

ASTM A320 Grade L70 Bolts Heat Treatment

Heat treatment of ASTM A320 Grade L70 material is 593°C (1100°F) minimum at quenched and tempered

Yield Strength of A320 L70 Bolts

Yield strength of ASTM A320 Grade L70 bolts is 105 ksi or 725 MPa at 0.2% offset

A320 Grade L70 Material Impact Test Requirements

Test Temperature -100°F -73°C
Impact value 20 ft-lbf (27 J) 16 ft-lbf (22 J)
Impact value permitted 15 ft-lbf (20 J) 12 ft-lbf (16 J)

ASTM A320 Grade L70 Equivalent

Italy (UNI)

Italy (UNI)

  • 42CrMo4
France (AFNOR)

France (AFNOR)

  • 42CD4u
Spain (UNE)

Spain (UNE)

  • 40CrMo41
DIN (Germany)

DIN (Germany)

  • 42CrMoS4
American (UNS)

American (UNS)

  • AISI 4140
USA (Werkstoff No)

USA (Werkstoff No)

  • WNR 1.7227

ASME SA320 Grade L70 Stud Bolts Chemical Comparison

ASME SA320 Grade L70 Stud Bolts Chemical Comparison

  • P (Phosphorus) = 0.035% (Max.)
  • C (Carbon) = 0.38 - 0.48% (Max.)
  • Si (Silicon) = 0.15 - 0.35%
  • Mn (Manganese) = 0.75 - 1.00%
ASME SA320 Grade L70 Stud Bolts Chemical Comparison

  • S (Sulfur) = 0.040% (Max.)
  • Mo (Molybdenum) = 0.15 - 0.25%
  • Cr (Chromium) = 0.80 - 1.10%



SA 320 Grade L70 Hex Bolts Mechanical Properties

Grade ASTM A320 Grade L70
Size M65
Reduction of Area 50% (minimum)
Elongation in 2 inch 16% (minimum)

Types Of ASTM A320 L70 Stud Bolts


ASTM A320 Grade L70 Full Threaded Stud Bolts

ASTM A320 Grade L70 Full Threaded Stud Bolts

A320 Grade L70 Tap End Stud Bolts

A320 Grade L70 Tap End Stud Bolts

Grade L70 Double End Stud Bolts

Grade L70 Double End Stud Bolts

L70 Reduced Shank Stud Bolts

L70 Reduced Shank Stud Bolts

SA 320 Grade L70 Weld Studs Bolts

SA 320 Grade L70 Weld Studs Bolts

ASME SA320 Gr L70 Threaded Studs

ASME SA320 Gr L70 Threaded Studs