ASTM A194 Grades
ASTM A194 Grades
[ AREAS-961 ]The ASTM A194 Grade 2H specification covers carbon, alloy, and stainless steel nuts intended for use in high-pressure and/or high-temperature service. Unless otherwise specified, the American National Standard Heavy Hex Series (ANSI B 18.2.2) shall be used.
| 2H |  | Carbon steel Hex Nut, Heavy hex nut |
Property class | Chemical composition | |||||||||
C. | Mn. | Si. | P. | S. | Cr. | Ni. | Mo. | V. | Ti. | |
2H | 0.40 min | 1.00 | 0.40 | 0.040 | 0.050 | - | - | - | - | - |
Class | Diameter, [mm] | Brinell Hardness | Rockwell Hardness | |
C Scale | B Scale | |||
2H | To 1.1/2” | 248-327 | 24-35 | - |
over 1.1/2” | 212-327 | 35 max | 95 min | |
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