GA-50是什么材质！！

blue_knife · 发表于 2011-10-28 14:54:21

马上注册，结交更多热工坛友，更多精彩内容等着您！

您需要登录才可以下载或查看，没有帐号？免费注册

x

如题，百度也没有！！郁闷很！

jmmk · 发表于 2011-10-29 20:36:15

google

Meehanite GA-50 Flake Graphit Cast Iron
Categories:  Metal; Ferrous Metal; Cast Iron; Gray Cast Iron

Material Notes:  Type GA-50 combines high strength, toughness, wear resistance and damping capacity with excellent machinability. Responds well to heat treatment, local and surface hardening.

General Meehanite information - Meehanite metal is first melted to a definite degree of undercooling or constitution which is related to the section of the casting to be poured and the range of physical properties such as tensile strength and hardness required. Nucleation with patented mixtures of graphitizing agents results in the removal of undercooling, in the controlled precipitation of graphite and in a fine grained eutectic cell structure which determines the density and physical integrity of the casting. Ordinary cast irons made to chemical specifications which do not include the benefit of controlled undercooling are influenced by mass effect to a maximum degree and for this and other reasons cannot be considered an equivalent to Meehanite metal.

Information provided by Meehanite Marketing Association.

Vendors:  No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.

jmmk · 发表于 2011-10-29 20:58:53

Meehanite Flake Graphite Types

PROPERTY
TYPE
AQ
TYPE
GM-60
TYPE
GA-50
TYPE
GC-40
TYPE
GE-30
TYPE
GF-20

Tensile Strength-psi
50/65,000
60,000
50,000
40,000
30,000
20,000

Proportional Limit-psi
.01% permanent set
25,000
25,000
22,000
14,500
11,500
9,500

Modulus of Elasticity-psi
22,000,000
21,500,000
20,000,000
16,500,000
13,000,000
9,000,000

Modulus of Rigidity-psi
9,500,000
9,500,000
8,750,000
7,250,000
5,550,000
4,000,000

Poisson's Ratio
0.33
0.33
0.32
0.30
0.27
0.24

Modulus of Rupture-psi
93,000
93,000
90,000
80,000
61,000
41,000

Compression Strength-psi
200,000
200,000
180,000
150,000
120,000
90,000

Fatigue Strength-psi
30,000
25,000
22,000
17,500
13,500
11,000

Shear Strength-psi

53,000
50,000
40,000
30,000
21,550

Single Impact-Izod
                  (0.798")
Dia. Unnotched Bar
30-40
30-40
25-35
12-20
6-12
4-9

Brinell Hardness (Nominal)
280-550
230
220
190
up to 160
150

Machinability Rating (Dalcher)
52
50
48
47
38
30

Thermal Conductivity
50-450 &degF. BTU/Hr/Sq.
Ft./Inch Thickness/&&degF

355
350
325
290
---

Coefficient of Thermal
Expansion Per &degF. from
100 deg to 1000 &degF.
.00000675
.00000705
.00000620
.00000660
.00000690
---

Specific Gravity
7.34
7.34
7.31
7.25
7.06
6.80

Solid Contraction
(Patternmaker's Shrinkage)
5/32"-6/32"
per ft.
(1.3-1.5%)
5/32"-6/32"
per ft.
(1.3-1.5%)
5/32"-6/32"
per ft.
(1.3-1.5%)
4/32"-5/32"
per ft.
(1.0-1.3%)
1/10"-1/8"
per ft.
(0.8-1.0%)

1/10"
(0.8%)

jmmk · 发表于 2011-10-29 21:06:57

大名鼎鼎的“米红“

帐号		自动登录	找回密码
密码			免费注册

[求助] GA-50是什么材质！！

马上注册，结交更多热工坛友，更多精彩内容等着您！