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Properties of Valve Materials Brass & Iron
 
ALLOY ASTM NO. OTHER
ALLOY
DESIGNATION
NOMINAL OR MAXIMUM CHEMICAL COMPOSITION
AL CARBON
C
CHROME
Cr
COBALT
Co
COPPER
Cu
IRON
Fe
LEAD
Pb
MANGA-
NESE
Mn
MOLYB-
NESE
Mo
Commercial Aluminum 380 (Modified) UNS A38000 87.0       1.0 1.3   0.35  
Free Cutting Brass B 16 UNS C36000         61.5   3.0    
Navy "M" (Steam Bronze) B 61 UNS C92200 0.005       88.0 0.25 1.5    
Composition Bronze
(Ounce Metal)
B 62 UNS C83600 0.005       85.0 0.30 5.0    
Copper-Silicon Alloy B B 98/B 99 UNS C65100         96.0 0.8 0.05 0.7  
Forging Brass B 124 UNS C37700         60.0 0.3 2.0    
Brass Wire (Red Brass) B 134 UNS C23000         85.0 0.05 0.05    
Leaded Red Brass B 140 UNS C31400         89.0 0.10 1.9    
Aluminum Bronze (Cast) B 148 UNS C95400 11.0       85.0 4.0      
Aluminum Bronze (Rod) B 150 UNS C64200 7.0       91.0 0.30 0.05 0.10  
Silicon Red Brass B 371 UNS C69400         81.5 0.20 0.30    
Leaded Semi-Red Brass B 584 UNS C84400 0.005       81.0 0.40 7.0    
Leaded Red Brass   UNS C84500 0.005       78.0 0.40 7.0    
Leaded Nickel Bronze B 584 UNS C97600         64.0   4.0    
Copper (Wrought) B 75 UNS C12200         99.9        
Gray Iron A 126 Class B                  
3% Ni Grey Iron A 126
(已修改)
Modified
Class B                  
Austenitic Grey Iron
(Ni Resist)
A 436 Type 2   3.00 2.0   0.5     1.0  
Ductile Iron (Ferritic) A 395     3.20              
Austenitic Ductile Iron
(Ductile) (ni-Resist)
A 536
A 439 D2C
    2.9 0.5         2.4 1.0

 

ALLOY NOMINAL OR MAXIMUM CHEMICAL COMPOSITION NOMINAL PHYSICAL PROPERTIES
NICKEL
Ni
PHOS
P
SILICON
Si
SULFUR
S
TIN
Sn
TITAN-
IUM
Ti
TUNG-
STEM
W
ZINC
Zn
TENSILE
STRENGTH
Psi
YIELD
STRENGTH
Psi
%
ELONGATION
HARDENESS
Commercial Aluminum 380 0.50   12.0   0.15     0.50 42,000 19,000 3.5  
Free Cutting Brass               35.5 50,000 20,000 15 75 HRB
Navy "M" (Steam Bronze) 1.0 0.05 0.005 0.05 6.0     4.5 34,000 16,000 22 65 HB
*500 kg
Composition Bronze
(Ounce Metal)
1.0 0.05 0.005 0.08 5.0     5.0 30,000 14,000 20 60 HB
500 kg
Copper-Silicon Alloy B     1.6         1.5 86,000** 20,000 11 65 HRB
Forging Brass               38.0 52,000 20,000 45 80 HRB
Brass Wire (Red Brass)               15.0 56,000     60 HRB
Leaded Red Brass 0.7             9.1 50,000 30,000 7 60 HRB
Aluminum Bronze (Cast)                 75,000 30,000 12 170 HB
*3000 kg
Aluminum Bronze (Rod) 0.25   2.0   0.20     0.5 90,000 45,000 9 80 HRB
Silicon Red Brass     4.0         14.5 80,000 40,000 15 85 HRB
Leaded Semi-Red Brass   0.02 0.005 0.08 3.0     9.0 29,000 13,000 18 55 HB
*500 kg
Leaded Red Brass 1.0 0.02 0.005 0.08 3.0     12.0 29,000 13,000 16 55 HB
*500 kg
Leaded Nickel Bronze 20.0       4.0     8.0 40,000 17,000 10 80 HB
Copper (Wrought)   0.02             36,000 30,000 25 45 T
Gray Iron   0.75   1.5         31,000     195 HB
3% Ni Grey Iron 3.00 0.75   0.15         31,000     195 HB
Austenitic Grey Iron
(Ni Resist)
20.0   2.0 0.12         25,000     118 HB
Ductile Iron (Ferritic)   0.08 2.50           80,000 55,000 6 160 HB
Austenitic Ductile Iron
(Ductile) (ni-Resist)
24.0 0.08 3.0           58,000 28,000 20 146 HB

 

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