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MIL-HDBK-5J, Metallic Materials and Elements for Aerospace Vehicle Structures

Last Updated 29 Oct 2026

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	Maximum Diameter of Round or Equivalent Round, in.^a
F_tu, ksi	0.5	0.8	1.0	1.7	2.5	3.5	5.0
270 & 280							300M^c
260				AISI 4340^b	AISI 4340^c	AISI 4340^d
220				AMS Grades^b,e	AMS Grades^c,e	D6AC^b	D6AC^c
200		AISI 8740	AISI 4140	AISI 4340^b AMS Grades^b,e	AISI 4340^c AMS Grades^c,e	AISI 4340^d	D6AC^c
≤180	AISI 4130 and 8630	AISI 8735 4135 and 8740	AISI 4140	AISI 4340^b AMS Grades^b,e	AISI 4340^c AMS Grades^c,e	AISI 4340^d D6AC^b	D6AC^c

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MIL-HDBK-5J, Metallic Materials and Elements for Aerospace Vehicle Structures

Last Updated 29 Oct 2026

Hover any section to copy its link or text, ask Copilot about it, or bookmark it.

	Maximum Diameter of Round or Equivalent Round, in.^a
F_tu, ksi	0.5	0.8	1.0	1.7	2.5	3.5	5.0
270 & 280							300M^c
260				AISI 4340^b	AISI 4340^c	AISI 4340^d
220				AMS Grades^b,e	AMS Grades^c,e	D6AC^b	D6AC^c
200		AISI 8740	AISI 4140	AISI 4340^b AMS Grades^b,e	AISI 4340^c AMS Grades^c,e	AISI 4340^d	D6AC^c
≤180	AISI 4130 and 8630	AISI 8735 4135 and 8740	AISI 4140	AISI 4340^b AMS Grades^b,e	AISI 4340^c AMS Grades^c,e	AISI 4340^d D6AC^b	D6AC^c