ASTM A9 ASTM A9 Datasheet
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel ASTM A9
ASTM A4
UNS T30104
ASTM A5
UNS T30105
ASTM A6
UNS T30106
ASTM A7
UNS T30107
ASTM A8
UNS T30108
Datasheet for:Steel Grades:Tool Steel:ASTM A9

Chemical composition(mass fraction)(wt.%) of the ASTM A9

C
Si
Mn
P
S
Cr Ni
0.45-0.55  0.95-1.15 0.2-0.5 0.03  0.03  4.75-5.5 1.25-1.75 
Mo Al W Nb Ti V Ce
1.3-1.8   0.8-1.4        
N Co Pb B Other    
             
             

Mechanical properties / Mechanische Eigenschaften / Caracteristiques mecaniques of grade ASTM A9

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
869 (≥) 649 (≥) 12 32 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 331
Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
12 - -     0.44 -  
222 827 - 42.3 124   -  
579 - 43 31.2   121 332
Heat treated : 1727°C - 1247°C
Directory is being updated.
The material does not have direct Metallography properties.
Directory is being updated.
The material does not have direct Metallography properties.
Directory is being updated.
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
Y1Cr18Ni9
Improve the machinability, ablation resistance. Suitable for automatic lathe production of bolt and nut
1Cr18Ni9
High strength after cold forming, but elongation than 1 cr17ni7 slightly worse. Used in architectural decoration parts
1Cr18Mn10Ni5Mo3N
Of urea with good corrosion resistance, can produce urea corrosion of the equipment.
1Cr17Ni7
High strength after cold forming. Used in railway vehicle, conveyor belt, bolt and nut, etc
Y1Cr18Ni9Se
Improve the machinability, ablation resistance. Suitable for automatic lathe production of rivets, screws
0Cr18Ni9
Seamless stainless steel tubes for boiler and heat exchanger
00Cr19Ni10
Carbon content lower than 0Cr19ni9 steel, excellent intergranular corrosion resistance, is used for welding after the class is not processed parts
1Cr17Mn6Ni5N
Nickel steel grade, instead of number 1 cr17ni7 and magnetism after cold working, used in railway vehicle, etc
1Cr18Mn8Ni5N
Nickel steel, instead of 1cr18ni9
0Cr19Ni9N
Based on 0cr19ni9 plus N, strength increase and the plastic is not down. Reduce the thickness of the material. As a structure with strength components
0Cr19Ni10NbN
Based on zero cr19ni9 plus N and Nb, with better than 0 cr19ni9 properties and USES
00Cr18Ni10N
In 00cr19ni10 adding N, on the basis of the above grades also features, use the same as the 0 cr19ni9n, but better intergranular corrosion resistance
1Cr18Ni12
Compared with 0 cr19ni9, processing low hardenability. Used for spinning processing, special drawing, cold heading
0Cr23Ni13
Corrosion resistance and heat resistance are better than 0cr19ni9
0Cr25Ni20
Oxidation resistance is better than 0cr23ni13. Mostly used as heat resistant steel
0Cr17Ni12Mo2
Seamless stainless steel tubes for boiler and heat exchanger
1Cr18Ni12Mo2Ti
Seamless stainless steel tubes for boiler and heat exchanger
0Cr18Ni12Mo2Ti
Seamless stainless steel tubes for boiler and heat exchanger
A-29 1025
General use carbon steel rod
1025
These products have been used typically for use in fabrication of fittings, but usage is not limited to such applications. These products are not typically used for deep forming or cupping operations.
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