ASTM A194 2HM — Chemical Composition & Mechanical Properties
ASTM A194 2HM is an ASTM specification for heavy hex nuts (UNS K04002). This sheet summarises its chemical composition limits and minimum mechanical properties. Typical use: sour-service nuts for A193 B7M studs.
Chemical composition of ASTM A194 2HM (weight %)
C0.40 min
Mn1.00 max
P max0.040
S max0.050
Si0.40 max
Cr—
Ni—
Mo—
Mechanical properties
| Proof load stress | 1035 MPa (150 ksi), heavy hex |
|---|---|
| Hardness | 159–235 HBW (84–99 HRB) |
Heat treatment
Quenched & tempered, 620 °C min temper
Typical service
Sour-service nuts for A193 B7M studs
Reference information compiled from the published standard for convenience. It does not replace the current edition of the governing standard, which takes precedence. Verify critical dimensions and properties before design, purchase or fabrication. Teshi Engineers & Sales Promoters (P) Ltd accepts no liability for errors or omissions.
FAQ
ASTM A194 2HM: common questions
What is the carbon content of ASTM A194 2HM?
0.40 min %.
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