ALFA 70S2 TIG Welding Filler Rod / ER70S-2

ALFA MAKE 70S2 TIG Welding Filler Rod / ER70S-2

Rs. 240

ALFA

Tig Welding Wire

1000 In Stock

ALFA 70S2 TIG Welding Filler Rod / ER70S-2

ALFA MAKE 70S2 (ER70S-2) is a premium copper-coated TIG welding filler wire designed for welding unalloyed and micro-alloyed steels. It contains Aluminium (Al), Titanium (Ti), and Zirconium (Zr) as strong deoxidizing elements, along with controlled Manganese and Silicon content.

The filler wire is suitable for welding applications where clean welds, smooth flow, excellent bead appearance, and reliable mechanical properties are required. Its low impurity levels make it suitable for welding semi-killed steels as well as rusty or contaminated joint areas.

The deposited weld metal can meet X-ray/radiographic quality requirements under optimum welding conditions. It is particularly suitable for applications requiring impact performance at sub-zero temperatures.

Key Features

  • ALFA 70S2 / ER70S-2 TIG filler wire
  • AWS A5.18 classification
  • Copper-coated surface for smooth feeding and welding
  • Contains Al, Ti and Zr deoxidants
  • Low levels of sulphur and phosphorus impurities
  • Excellent weld pool control
  • Smooth flow and shiny bead appearance
  • Suitable for demanding structural welding applications
  • Suitable for sub-zero impact requirements
  • Can provide radiographic-quality weld deposits under suitable conditions
  • Recommended shielding gas: Pure Argon

Classification

  • Product: ALFA 70S2
  • Equivalent: ER70S-2
  • AWS Classification: AWS A5.18: ER70S-2

Chemical Composition

Element Range
C 0.07% Max
Mn 0.90 – 1.40%
Si 0.40 – 0.70%
Zr 0.02 – 0.12%
Al 0.05 – 0.15%
Ti 0.05 – 0.15%
S 0.020% Max
P 0.025% Max

Mechanical Properties

Property Range
Tensile Strength (TS) 510 – 620 N/mm²
Yield Strength (YS) 410 – 550 N/mm²
Elongation (L=4D) 22 – 28%
CVN Impact Value at -30°C 30 – 90 Joules

Typical Applications

ALFA 70S2 is suitable for welding:

  • Structural steel
  • Pressure vessels
  • Boilers
  • Unalloyed structural steel
  • Micro-alloyed structural steel
  • Applications requiring sub-zero impact performance
  • ASTM A36
  • ASTM A106 Grade A/B/C
  • ASTM A139
  • ASTM A516 Grade 70

Suitable for applications involving steels with specified tensile strength up to 550 N/mm² and impact requirements down to -30°C.

Shielding Gas

Pure Argon

Packing & Sizes

Size Length Packing / Packet Packing / Box
1.6 mm 1000 mm 5 kg 5 × 4 = 20 kg
2.0 mm 1000 mm 5 kg 5 × 4 = 20 kg
2.40 / 2.50 mm 1000 mm 5 kg 5 × 4 = 20 kg
3.15 / 3.20 mm 1000 mm 5 kg 5 × 4 = 20 kg

Product Specifications

Specification Details
Brand ALFA 
Product Name ALFA 70S2
Product Type TIG Welding Filler Rod / Wire
Classification ER70S-2
AWS Classification AWS A5.18: ER70S-2
Coating Copper Coated
Material Carbon Steel Filler Wire
Shielding Gas Pure Argon
Standard Length 1000 mm
Available Sizes 1.6 mm, 2.0 mm, 2.40 mm, 2.50 mm, 3.15 mm, 3.20 mm
Packing per Packet 5 kg
Packing per Box 20 kg (5 × 4)
Tensile Strength 510–620 N/mm²
Yield Strength 410–550 N/mm²
Elongation 22–28%
CVN Impact Value 30–90 J at -30°C
Applications Structural Steel, Pressure Vessels, Boilers, Fabrication
Suitable Standards ASTM A36, A106 A/B/C, A139, A516 Grade 70
HSN Code Welding Filler Rod / Wire – verify applicable classification before listing

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