A105/A350-LF2 is a steel specification for forged carbon steel components.


Typical applications for this grade of steel include pipes, valves and flanges.


E Steel Sdn Bhd supplies A105 steel Round bar in a variety of sizes ranging from 3/4”- 12”. 

Heat Treatment

Heat treatment is not required except for ASTM A 105 carbon steel forging. However, there are some exceptions that will require heat treatment to improve its mechanical properties for better application.

The typical heat treatment conducted for A105 carbon steel forgings includes annealing(A), normalizing(A), normalizing and tempering(NT), quenching and tempering(QT). Especially, normalizing at approximate 950°C for 2.5 hours is often required by many clients to eliminate possible internal stress in the forgings. These materials are usually marked as “ASTM A105N”.

ASTM A105 & ASTM A350-LF2 DUAL CERTIFIED   A Special Quality Fine Grain Carbon-Manganese Steel for Piping Components
Typical Analysis
A105 Spec.
C Mn P S Si
.35 max .60/1.05 .040 max .05 max0 .35 max
A350-LF2 Spec.
C Mn P S Si
.30 max 1.35 max 035 max .04 max0 .15/.30
C Mn P S Si
.20 1.24 .009 .021 .18
  • A105 and A350-LF2 are standard specifications for forged carbon steel piping components. A105 for ambient and higher-temperature service; A350-LF2 for low-temperature service with Charpy V-Notch impact energy testing. Components include flanges, various fittings and valves.


ASTM A105 & ASTM A350-LF2 DUAL CERTIFIED Mechanical Properties


Spec A105 A350-LF2 A105/A350-LF2
Tensile Strength Min, psi 70,000 70,000-95,000 70,000-95,000
Tensile Strength Min, N/mm² 485 485-655 485-655
Yield Strength Min, psi 36,000 36,000 36,000
Yield Strength Min, N/mm² 250 250 250
Elongation (%) 22 22 22
Reduction of Area (%) 30 30 30
Hardness, maximum 187 15/12 ft-lbs 15/12 ft-lbs
CVN at -50℉ 20/16 joules 20/16 joules


A105 Carbon SteelSome of the components that are made by ASTM A105 are listed below.

  1. Flanges
  2. Valve Body
  3. Forged Fittings such as Elbow, Tee, Coupling, etc.
  4. Pressure vessel forge components such as a self-reinforced nozzle, nozzle neck, etc.


Low Mang Kok B: Klang, Selangor, 18.12.1973; P: Low Chong Seng 1948; Lee Sok Yen 1952; MS: Chua Hooi Koon 1976; Ch: Low Chun Leong 1998; Low Chun Ee 2002; E: 1980 - 1985 SJK (C) Pin Hua 1 - Primary School; 1986 - 1991 SM Kwang Hua - Secondary School; 1992 - 1993 College WIT - Electronic technician; Ca: 1992 - 1993 Lion Suzuki Motor Sdn. Bhd. - Sales Executive; 1993 - 1994 Great Eastern Life Assurance (Malaysia) Berhad - Insurance Agent; 1994 - 1998 Kimwin Special Steel Sdn. Bhd. - Sales Executive; 1998 - 2000 ASSAB Steels (Malaysia) Sdn. Bhd. - Sales Engineer ; 2000 - 2004 Kimwin Special Steel Sdn. Bhd. - Freelancer Sales ; 2004 - 2010 EE TECK Marketing - Founder and Managing Director; 2010 - 2019 E Steel Sdn. Bhd - Founder and Managing Director; WaCW: Global Business Magazine - Asia Pacific Top Excellence Brand 2011; International Prestige Brand Award Book & Record 2017; Aw: Asia Pacific Top 100 Excellence Brand In Year 2011; International Prestige Brand Of The Year 2017; Me: China Entrepreneur Club; LS: English, Malay, Mandarin, Cantonese, Teochew, Hokkien; H: Gardening; Online Marketing; PMM: To develop Steel business globally through online new business model; RoS: Self discipline; Keep learning and always look for solution instead focus on problem; Web: www.esteelsuppliers.com Your index: Industry, Trade and Services Successful People in Malaysia (2nd Edition) Release date: December 2020 ( BPH - British Publishing House Ltd )