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E309-16/E309H-16

309H electrodes contain higher carbon over 309 for the welding of austenitic, high carbon 24% Cr –12% Ni stainless steels such as AISI-309-H. The weld deposit of this electrode contains a 0.04-0.08% carbon, which provides higher tensile and creep strengths at elevated temperatures. 309H electrodes have a high deposition rate resulting in excellent efficiency. This electrode may be used in all positions and may be used joint welds in construction parts for applications like industrial furnaces/ovens, chemical engineering and cryogenic applications. It is also used for joining of dissimilar material.

TYPICAL WIRE CHEMISTRY (%)

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AWS Spec 309-16

AWS Spec 309H-16

Typical Weld Metal

Carbon

0.15

0.04-0.15

0.71

Chromium

22.0

25.0

24.45

Nickel

12.0

14.0

13.04

Molybdenum

0.75

0.75

0.04

Manganese

0.5

2.5

0.60

Silicon

1.00

0.60

0.60

Phosphorus

0.04

0.030

0.030

Sulfur

0.03

0.010

0.010

Copper

0.75

0.07

0.07

Typical mechanical properties of weld metal (C02 shielding gas)

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AWS Spec

E309H-16

Tensile Strength (psi)

80,000 min

82,000-86,000 min

Yield Strength (psi)

67-71,000

Elongation in 2" (%)

30% min

38.2-41%