Grade |
Mil-T-21014 |
|||||
Class1 |
Class 1 |
Class 2 |
Class 3 |
Class 3 |
Class 4 |
|
Composition |
90%W, 6%Ni4%Cu |
90%W, 7%Ni3%Fe |
92.5%W, 5.25%Ni 2.25%Fe |
95%W, 3.5%Ni 1.5% Cu |
95%W, 3.5%Ni 1.5%Fe |
97%W, 2.1%Ni 0.9%Fe |
Density (gm/cc;lbs/in3) |
17;0.614 |
17;0.614 |
17.5;0.632 |
18;0.65 |
18;0.65 |
18.5;0.668 |
Hardness (RC) |
24 |
25 |
26 |
27 |
27 |
28 |
Ultimate Tensile Strength (PSI) |
110,000 |
120,000 |
114,000 |
110,000 |
120,000 |
123,000 |
Yield Strength, .2% Offset (PSI) |
80,000 |
88,000 |
84,000 |
85,000 |
90,000 |
85,000 |
Elongation (% in 1″) |
6 |
10 |
7 |
7 |
7 |
5 |
Proportional Elastic Limit (PSI) |
45,000 |
52,000 |
46,000 |
45,000 |
44,000 |
45,000 |
Magnetic Properties |
Nil |
Slightly Magnetic |
Slightly Magnetic |
Nil |
Slightly Magnetic |
Slightly Magnetic |
ASTM-B-459-67 |
Grade1 Type Ⅱ && Ⅲ |
Grade1 Type Ⅱ && Ⅲ |
Grade2 Type Ⅱ && Ⅲ |
Grade3 Type Ⅱ && Ⅲ |
Grade3 Type Ⅱ && Ⅲ |
Grade4 Type Ⅱ && Ⅲ |
NAVY MIL-T-21014: tungsten base parts, high density metal (sintered or hot pressed), coated, electrodeposited chromium.
Class |
1 |
2 |
3 |
4 |
|
Tungsten Nominal % |
90 |
92.5 |
95 |
97 |
|
Density (g/cc) |
16.85-17.25 |
17.15-17.85 |
17.75-18.35 |
18.25-18.85 |
|
Hardness (HRC) Max |
32 |
33 |
34 |
35 |
|
Ultimate Tensile Strength |
ksi |
110 |
110 |
105 |
100 |
Mpa |
758 |
758 |
724 |
689 |
|
Yield Strength at 0.2% off-set |
ksi |
75 |
75 |
75 |
75 |
Mpa |
517 |
517 |
517 |
517 |
|
Elongation, % |
5 |
5 |
3 |
2 |
|
ASTM B777-99 Standard Tungsten Alloy Specifications for tungsten base, high-density metal
1.tungsten alloy specifications cover the requirements for four classes of machinable,high-density tungsten base metal produced by consolidation of metal powder mixtures of which the composition is mainly tungsten alloy specifications. Different tungsten alloy specifications have different uses, we can provide all kinds of tungsten alloy specifications according to your requirements.This material specification may be used for bare parts or be used for parts that may be coated with other materials for protection against corrosion and abrasion.
2. Intended Use -Parts made from this material are intended for uses such as weights or counter-balances in static or dynamic balancing high-speed rotating inertia members, radiation shielding, hypervelocity impact, and vibration-damping applications. We could make products of tungsten alloy grades as your special properties of tungsten heavy alloy.
3.Special Applications -different products of tungsten alloy specifications have different applications, properties or requirements may be important. These alloys may contain elements that make them magnetic. Class 4 is not available in a non-magnetic grade. For purposes of this specification, non-magnetic characteristics of tungsten alloy specifications are defined as material having a maximum magnetic permeability of 1.05. Also for special applications involving large sections, methods for determining internal quality, such as mechanical tests on specimens from these larger sections or suitable nondestructive tests may be applied. If required, these additional tests shall be specified in the purchase order. We can offer many tungsten alloy specifications with the standard size as well as design mould especially for you.