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HAYNES® Alloys

Welding

HAYNES® HR-160® alloy is readily weldable by Gas Tungsten Arc (TIG) and Gas Metal Arc (MIG) welding processes. Many of the alloy's welding characteristics are similar to those for the HASTELLOY® alloys and the same precautions apply. Submerged arc welding is not recommended as this process is characterized by high heat input which could result in distortion and hot cracking. HR-160 filler metal is prone to start/stop cracking. The filler metal may be prone to hot cracking when welding heavy plate (e.g. greater than 1/2 inch thick) under highly restrained conditions. Any localized cracking should be removed by grinding prior to further welding. Do not attempt to remelt or "wash-out" welding cracks.

Base Metal Preperation

The joint surface and adjacent area should be thoroughly cleaned before welding. All grease, oil, crayon marks, sulfur compounds and other foreign matter should be removed. It is preferable, but not mandatory, that the alloy be in the solution-annealed condition when welded.

Filler Metal Selection

Matching composition filler metal is recommended for joining HR-160® alloy. When dissimilar base metals are to be jointed, such as HR-160 alloy to a stainless steel, HAYNES 556 filler metal is recommended. Please click here or see the Haynes Welding SmartGuide for more information.

Preheating, Interpass Temperatures and Postweld Heat Treatment

Preheat should not be used so long as the base metal to be welded is above 32°F (0°C). Interpass temperatures should be less than 200°F (93°C). Auxiliary cooling methods may be used between weld passes, as needed, providing that such methods do not introduce contaminants. Postweld heat treatment is not normally required for HR-160® alloy.

Nominal Welding Parameters

Nominal welding parameters are provided as a guide for performing typical operations. These are based on welding conditions used in our laboratory and should be considered only as a guideline. For further information, please click here.

HR160 retort

HR160 bend

AWM Tensile

Type Test Temperature Ultimate Tensile Strength 0.2% Yield Strength Elongation
°F °C ksi MPa ksi MPa %
GMAW RT RT 94.1 649 58.0 400 26.4
500 260 81.9 565 45.8 316 25.2
1000 538 71.3 492 42.8 295 32.4
1400 760 43.2 298 33.7 232 29.6
1600 871 22.7 157 17.6 121 33.3
GTAW RT RT 101.3 698 68.5 472 26.4
500 260 81.7 563 47.2 325 32.1
1000 538 70.4 485 42.8 295 43.7
1400 760 46.3 319 34.4 237 30.0
1600 871 22.6 156 18.1 125 72.2

All-Weld Metal samples
RT= Room Temperature

Welded Transverse Tensile

Condition Test Temperature Ultimate Tensile Strength 0.2% Yield Strength Elongation
°F °C ksi MPa ksi MPa %
As-Welded RT RT 102.3 705 60.1 414 30.6
500 260 82.9 572 49.5 341 32.0
1000 538 75.3 519 47.1 325 39.5
1400 760 45.4 313 31.3 216 26.3
1600 871 23.6 163 18.6 128 33.9
Aged* RT RT 98.7 680 52.8 364 18.1

GTAW welded transverse tensile samples
*Samples aged at 1600°F (871°C) for 1000 hours
RT= Room Temperature

Welded Creep Rupture

Test Temperature Stress 1% Creep Life 5% Creep Life Rupture Life Elongation
°F °C ksi MPa h h h %
1200 649 30.0 207 12.9 67.0 110.7 13.7
1400 760 18.0 124 5.0 13.1 29.2 22.0
1600 871 11.5 79 49.0 67.5 114.6 26.9
1700 927 6.0 41 61.0 94.0 152.4 33.9
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