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BoltingStud bolts / boltingTG-MG-032 · Rev. 0 · October 2026

ASTM A193 B16 — Chemical Composition & Mechanical Properties

ASTM A193 B16 is an ASTM specification for stud bolts / bolting (UNS K14072). This sheet summarises its chemical composition limits and minimum mechanical properties. Typical use: high-temperature bolting to about 595 °C (values for dia ≤ M64 / 2½ in.).

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Chemical composition of ASTM A193 B16 (weight %)

C0.36–0.47
Mn0.45–0.70
P max0.035
S max0.040
Si0.15–0.35
Cr0.80–1.15
Ni—
Mo0.50–0.65

Other elements and limits: V 0.25–0.35; Al 0.015 max

Mechanical properties

Tensile strength, min860 MPa
Yield strength, min725 MPa
Elongation, min18 %
Hardness321 HBW (35 HRC)

Heat treatment

Quenched & tempered, 650 °C min temper

Typical service

High-temperature bolting to about 595 °C (values for dia ≤ M64 / 2½ in.)

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 A193 B16: common questions

What is the minimum yield strength of ASTM A193 B16?

725 MPa, with a minimum tensile strength of 860 MPa.

What is the carbon content of ASTM A193 B16?

0.36–0.47 %.

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