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5Cr-Mo-V Aircraft-Quenched and tempered (240 ksi) Bars and forgings: MIL-HDBK-5J Design Allowables

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Material class	Steel
Alloy / temper / form	5Cr-Mo-V Aircraft / Quenched and tempered (240 ksi) / Bars and forgings
Specifications	AMS 6487 and AMS 6488
Handbook	MIL-HDBK-5J, 31 January 2003, section 2.4.1.0, Table 2.4.1.0(c) (pdf page 68 of the chapter file)
Dimension bands	1
Density	0.281 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		all
Specification		AMS 6487 and AMS 6488
Basis		S
F_tu, ksi	LT	240
F_ty, ksi	LT	200
F_cy, ksi	LT	220
F_su, ksi	LT	144
F_bru (e/D = 2.0), ksi	LT	400
F_bry (e/D = 2.0), ksi	LT	315
E, Msi		30
E_c, Msi		30
G, Msi		11
ν		0.36
ρ, lb/in3		0.281

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

Moduli at temperature

°F	F_tu	F_ty	F_cy	F_su	F_bru	F_bry
100	99.5	99.4	99.4	99.6	99.7	99.8
200	96.7	96.9	97	97.8	97.6	96.8
300	94	94.2	94.5	96.2	95.6	93.9
400	91	91.7	92	94.4	93.3	91
500	88.1	89	89.7	92.7	90.7	88.2
600	85.3	86.6	87.4	91.1	87.9	85.3
700	82.7	83.9	84.6	89.1	84.8	81.6
800	79.6	79.7	80.6	86.2	80.6	76.9
1000	65.1	64.5	64.3	74.7	64	62.7

Factors in percent of the room-temperature allowable.

Other 5Cr-Mo-V Aircraft Tables

5Cr-Mo-V Aircraft-Quenched and tempered (240 ksi) Sheet, strip, and plate (Table 2.4.1.0(d))
5Cr-Mo-V Aircraft-Quenched and tempered (260 ksi) Bars and forgings (Table 2.4.1.0(c))
5Cr-Mo-V Aircraft-Quenched and tempered (260 ksi) Sheet, strip, and plate (Table 2.4.1.0(d))
5Cr-Mo-V Aircraft-Quenched and tempered (280 ksi) Bars and forgings (Table 2.4.1.0(c))
5Cr-Mo-V Aircraft-Quenched and tempered (280 ksi) Sheet, strip, and plate (Table 2.4.1.0(d))

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.