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”.