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Custom 455-H950 Bar: MIL-HDBK-5J Design Allowables

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Material class	Steel
Alloy / temper / form	Custom 455 / H950 / Bar
Specifications	AMS 5617
Handbook	MIL-HDBK-5J, 31 January 2003, section 2.6.4.0, Table 2.6.4.0(b) (pdf page 141 of the chapter file)
Dimension bands	2
Density	0.28 lb/in3

Design Mechanical and Physical Properties (room temperature)

As printed in the handbook table. Bases: A and B are statistical minimums (99 % and 90 % probability at 95 % confidence), S the specification minimum. Grain directions: L longitudinal, LT long transverse, ST short transverse.

Dimension band		0–4 in	4.001–6.000 in
Specification		AMS 5617	AMS 5617
Basis		S	S
F_tu, ksi	L	225	220
	LT	220	220
	ST	220	220
F_ty, ksi	L	210	205
	LT	205	205
	ST	205	205
F_cy, ksi	L	219	214
	LT	219	214
	ST	219	214
F_su, ksi	L	133	130
	LT	133	130
	ST	133	130
F_bru (e/D = 1.5), ksi	L	355	347
	LT	355	347
	ST	355	347
F_bru (e/D = 2.0), ksi	L	450	440
	LT	450	440
	ST	450	440
F_bry (e/D = 1.5), ksi	L	311	303
	LT	311	303
	ST	311	303
F_bry (e/D = 2.0), ksi	L	366	358
	LT	366	358
	ST	366	358
e, %	L	10	10
	LT	5	5
	ST	5	5
E, Msi		28.5	28.5
E_c, Msi		30	30
G, Msi		11.3	11.3
ν		0.27	0.27
ρ, lb/in3		0.28	0.28

Effect of Temperature

Percent of the room-temperature value against temperature, digitized from the handbook figures (the shortest exposure of each figure, every 10 °F). Strength curves give the allowable at temperature; "after exposure" curves give the room-temperature property after a soak at that temperature.

Strength allowables at temperature, percent of room temperature

Elongation and exposure effects

°F	F_tu	F_ty	F_su
-100	109.5	106.3
0	103.4	103.4	102.2
100	99	99	97.7
200	94.3	94.3	92.5
300	89.8	89.8	87.3
400	86.7	84.5	83.4
500	83.3	80	79.8
600	80.2	75.9	76.2
700	76.5	72.1	72.2

Factors in percent of the room-temperature allowable.

Other Custom 455 Tables

Custom 455-H1000 Bar (Table 2.6.4.0(b))
Custom 455-H950 Tubing (Welded) (Table 2.6.4.0(b))

Source and Use

U.S. Department of Defense (2003). Metallic Materials and Elements for Aerospace Vehicle Structures. MIL-HDBK-5J, 31 January 2003 (public domain). The values are the handbook's design allowables as extracted from the chapter tables; check the printed table before use in a certified analysis, and note that MIL-HDBK-5J was superseded by MMPDS, whose later editions may differ. No warranty is given.