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Iron and Ferrous Alloys

Typical Mechanical Properties*

 Remington
 Alloy No.

Material Density
g/cm3
Ult. Tensile
Strength psi
0.2% Yield
Strength psi
Percentage
Elongation
** Apparent
Hardness
*** Impact
Strength ft-lb
 R-1000 Iron 6.8
7.0
7.2
7.4
7.6
23,000
26,500
29,500
35,000
40,000
16,000
19,000
20,000
23,000
26,000
12
15
20
24
29
RF 40
RF 50
RF 55
RB 20
RB 30
14
23
46
65
>100
 R-1003 Medium Carbon Steel
6.8
7.2
32,000
43,000
23,000
31,000
9
11
RB 12
RB 37
--
--
 R-1007 High Carbon Steel
6.8
7.2
46,000
65,000
34,000
48,000
3
4
RB 60
RB 70
--
--
 R-2020 Low Nickel-Iron 6.8
7.0
7.2
7.4
38,000
41,000
47,500
53,000
25,000
27,000
31,000
35,000
8
11
14
18
RB 32
RB 40
RB 49
RB 55
13
17
24
35
 R-2027
 
Low Nickel-Steel
6.8
7.2
62,000
81,000
41,000
53,00
0
3
4
RB 74
RB 86
--
--
 R-2040 Medium Nickel-Iron
6.8
7.2
40,000
52,000
25,000
32,000
5
9
RB 35
RB 58
--
--
 R-2047 Medium Nickel-Steel
6.8
7.2
74,000
95,000
55,000
70,000
2
3.5
RB 80
RB 87
--
--
 R-2070 High Nickel-Iron
6.8
7.2
65,000
76,000
39,000
46,000
4.5
8
RB 64
RB 78
21
32
 R-2076 High Nickel-Steel
6.8
7.2
87,000
105,000
56,000
67,000
3.5
4
RB 80
RB 90
5
8
 R-2106 Air-Hardening
Nickel Steel
7.4 150,000 81,000 4 RC 30 25
 R-4028 Low Copper-Steel 6.6
6.8
7.0
7.2
62,000
71,000
82,000
93,000
50,000
54,000
58,000
67,000
1
1
1.5
1.5
RB 66
RB 74
RB 80
RB 84
--
--
--
--
 R-4058 Medium Copper-Steel 6.6
6.8
7.0
78,000
96,000
105,000
73,000
89,000
97,000
1
1
2
RB 82
RB 90
RB 96
2
5
7
 R-3050 Remington Alloy 7.0
7.2
7.4
7.6
32,000
37,000
47,000
53,000
17,000
20,000
25,000
28,000
12
16
25
30
RB 30
RB 35
RB 50
RB 60
56
85
>100
>100
 R-9600 Prealloyed AISI
4600-Type Steel
6.8
7.0
7.2
29,000
34,000
38,000
19,000
22,000
25,000
11
13
17
RB 10
RB 20
RB 34
--
--
--


** Properties listed were obtained on flat tensile specimens. They are considered typical, and are for information only. Properties may vary somewhat on actual parts, depending on size, shape, and processing variables.

** Composite hardness of pores and solid material, hence hardness value is somewhat lower than comparable wrought material.

*** Unnotched Charpy impact test perpendicular to pressing direction. High density materials with low combined carbon may be effectively case hardned. Control of carburized case depth in ferrous P/M materials is dependent upon density. Lower density parts will through harden.