Jiangyin Donghao Stainless Steel Pipe Co., Ltd  
  Portugal | Japanese | Русский | España | Deutsch | English | Chinese Sitemap | Forum   

    Products

Standard





This specification covers gray iron castings intended for general engineering use where tensile strength is a major consideration. Casting are classified on the basis of the tensile strength of the iron in separately cast test bars. The surface of the casting shall be free of adhering sand, scale, cracks, and hot tears, as determined by visual examination. The test bars are designated into S, A, B, and C categories, according to the thickness of its controlling wall section. The casting shall be subjected to a tension test to determine its tensile strength.

This standard is for gray iron castings used for general engineering use where tensile strength is a major consideration. Casting degrees are classified on the basis of the tensile strength of the cast test bars. This standard also provides the chemical composition and physical properties for motor vehicles.Castings produced to this specification are graded on the basis of minimum tensile strength obtained in special test coupons designed to standardize cooling rate. The tensile strength developed in certain casting sections may vary from test coupon values

According the minimum tensile strength obtained by test bars, designers could choose the suitable gray iron degrees. The following information is from ASTM.This specification covers gray iron castings intended for general engineering use where tensile strength is a major consideration. Castings are classified on the basis of the tensile strength of the iron in separately cast test bars.



Alternative Standards:
GB/T 9439-1998
NF A32-101(1997)/NF EN 1561:1997
DIN 1691-1985
ISO 185:1988
JIS G5501(1995)
KS D4301-1985
ГOCT 1412-1985
BS 1452-1990

ASTM A48 Gray Iron Degree and Tensile Strength

Degree/Grade Test Bar Strength
Min. Mpa
Test Bar Diameter
d/mm
ANSI / ASTM UNS
No.20A
No.20B
No.20C
No.20S
F11401 138 22.4
30.5
50.8
S Bar
No.25A
No.25B
No.25C
No.25S
F11701 172 22.4
30.5
50.8
S Bar
No.30A
No.30B
No.30C
No.30S
F12101 207 22.4
30.5
50.8
S Bar
No.35A
No.35B
No.35C
No.35S
F12401 241 22.4
30.5
50.8
S Bar
No.40A
No.40B
No.40C
No.40S
F12801 276 22.4
30.5
50.8
S Bar
No.45A
No.45B
No.45C
No.45S
F13101 310 22.4
30.5
50.8
S Bar
No.50A
No.50B
No.50C
No.50S
F13501 345 22.4
30.5
50.8
S Bar
No.55A
No.55B
No.55C
No.55S
F13801 379 22.4
30.5
50.8
S Bar
No.60A
No.60B
No.60C
No.60S
F14101 414 22.4
30.5
50.8
S Bar


ASTM A48 Gray Iron Degree and Chemical Composition for Motor Vehicles

Degree/Grade C % Si % Mn % P % ≤ S % ≤ CE
ASTM UNS
G1800 F10004 3.40~3.70 2.30~2.80 0.50~0.80 0.25 0.15 4.25~4.5
G2500 F10005 3.20~3.50 2.00~2.40 0.60~0.90 0.20 0.15 4.0~4.25
G2500a F10009 ≤3.40 1.60~2.10 0.60~0.90 0.15 0.12
G3000 F10006 3.10~3.40 1.90~2.30 0.60~0.90 0.15 0.15 3.9~4.15
G3500 F10007 3.00~3.30 1.80~2.20 0.60~0.90 0.12 0.15 3.7~3.9
G3500b F10010 ≤3.40 1.30~1.80 0.60~0.90 0.15 0.12
G3500c F10011 ≤3.50 1.30~1.80 0.60~0.90 0.15 0.12
G4000 F10008 3.00~3.30 1.80~2.10 0.70~1.00 0.10 0.15 3.7~3.9
G4000d F10012 3.10~3.60 1.95~2.40 0.60~0.90 0.10 0.15 (+Cr, +Mo)

 ASTM A48 Gray Iron Physical Properties and Mechanical Properties for Motor Vehicles

Degree/Grade Tensile Strength
σb≥/Mpa
Yield Strength
σbb≥/Mpa
Elongation
f ≥ / mm
Hardness
HBS
Impression Diameter
mm
G1800 137 780 3.6 143~187 5.0~4.4
G2500, G2500a 172 910 4.3 170~229 4.6~4.0
G3000 206 1000 5.1 187~241 4.4~3.9
G3500, G3500b,
G3500c
240 1090 6.1 207~255 4.2~3.8
G4000, G4000d 275 11800 6.9 217~269 4.1~3.7



    © Copyright Reserved   Home  |  Site Map   |  Links  |  Directory  |  Advertise  |   Heat  |  Tools  |  Standard  |  Pressure  |  Hardness  |  Surface  |  Forum  |  Contact
     E-mail: sales@tubingchina.com