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Cold-Worked Properties

HAYNES® 25 alloy has excellent strength and hardness characteristics in the cold-worked condition. These high property levels are also evident at elevated temperature, making 25 alloy quite suitable for applications such as ball bearings and bearing races. A modest additional increase in hardness and strength can be achieved through aging of the cold-worked material.

Typical Tensile Properties, Cold-Worked Sheet*

Cold Reduction Test
Temperature 		0.2% Offset
Yield Strength 		Ultimate
Tensile Strength 		Elongation
10 °F °C ksi MPa ksi MPa %
70 20 105 725 155 1070 41
100 540 78 540 114 785 48
1200 650 80 550 115 795 37
1400 760 67 460 87 600 8
1600 870 47 325 62 425 13
1800 980 27 185 39 270 15
15 70 20 124 855 166 1145 30
1000 540 107 740 134 925 29
1200 650 111 765 129 890 15
1400 760 86 595 104 715 5
1600 870 52 360 70 485 9
1800 980 30 205 40 275 5
20 70 20 141 970 183 1260 19
1000 540 133 915 156 1075 18
1200 650 120 825 137 945 2
1400 760 96 660 107 740 3
1800 980 30 205 41 285 4

*Limited data for cold-rolled 0.050-inch (1.3 mm) thick sheet

Typical Tensile Properties, Cold-Worked and Aged Sheet*

Condition Test
Temperature 		0.2% Offset
Yield Strength 		Ultimate
Tensile Strength 		Elongation
15% CW + Age A °F °C ksi MPa ksi MPa %
70 20 136 940 168 1160 31
1200 650 104 715 128 885 23
20% CW + Age A 70 20 152 1050 181 1250 17
1000 540 129 890 151 1040 19
1200 650 128 885 144 995 8
1400 760 97 670 108 745 2
1600 870 59 405 74 510 6
1800 980 33 230 43 295 5
20% CW + Age B 70 20 162 1115 191 1315 16
600 315 132 910 165 1140 28
1000 540 124 855 149 1025 23
1200 650 119 820 140 965 13
1400 760 92 635 116 800 7
1600 870 50 345 71 490 9
1800 980 31 215 42 290 12

*Limited data for cold-rolled 0.050-inch (1.3 mm) thick sheet
Age A = 700°F (370°C)/1 hour
Age B = 1100°F (595°C)/2 hours

Typical Hardness at 70°F (20°C), Cold-Worked and Aged Sheet*

Cold-Work HRC, After Indicated Level of Cold Work and Subsequent Aging Treatment
- 900°F (480°C) 1100°F (595°C)
% None 5 h 5 h
None 24 25 25
5 31 33 31
10 37 39 39
15 40 44 43
20 44 44 47

*Limited data for cold-rolled 0.070-inch (1.8 mm) thick sheet
HRC = Hardness Rockwell “C”.

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