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Alloy Steel Castings Table 1
TABLE 1 - Chemical Analyses of
Our Alloy Steels*
Type % Carbon % Manganese % Chromium % Nickel % Molybdenum
Moly Telastic 0.30-0.40
0.70-1.00
0.40-0.65
. . .
0.15-0.25
AISI 4135 0.33-0.38
0.70-0.90
0.80-1.10
. . .
0.15-0.25
No. 1 Gearalloy 0.27-0.37
0.70-1.00
0.60-0.90
0.60-0.90
0.30-0.40
AISI 8630 0.28-0.33
0.70-0.90
0.40-0.60
0.40-0.70
0.15-0.25
No. 2 Gearalloy** 0.17-0.23
0.70-1 00
0.60-0.90
0.60-0.90
0.30-0.40
AISI 8120 0.18-0.23
0.70-0.90
0.40-0.60
0.40-0.70
0.15-0.25
No. 3 Gearalloy 0.30-0.37
0.70-1.00
0.60-0.90
0.60-0.90
0.40-0.50
AISI 8633*** 0.30-0.37
0.70-0.90
0.40-0.60
0.40-0.70
0.15-0.25
No. 4 Gearalloy 0.38-0.45
0.70-1.00
0.60-0.90
0.60-0.90
0.40-0.50
AISI 8140 0.38-0.43
0.75-1.00
0.40-0.60
0.40-0.70
0.15-0.25
No. 6 Gearalloy 0.38-0.45
1.05-1.35
0.90-1.20
0.60-0.90
0.55-0.60
No Similar AISI Grade
No. 5 Gearalloy - Discontinued
* Percent phasphorus and sulfur (both 0.030% max.)
are less than ASTM A148 permitted maximums of 0.05% and 0.06%, respectively.
Silicon content is typically 0.45%
** No. 2 Gearalloy also contains 0.04-0.06%
vanadium for grain refinement. Vanadium additions are also available for
other grades when required.
*** "8633" is not a standard AISI designation.
