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17-4PH-H900 Bar: MIL-HDBK-5J Design Allowables

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Material class	Steel
Alloy / temper / form	17-4PH / H900 / Bar
Specifications	AMS 5643
Handbook	MIL-HDBK-5J, 31 January 2003, section 2.6.9.0, Table 2.6.9.0(e) (pdf page 199 of the chapter file)
Dimension bands	1
Density	0.282 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		0–8 in
Specification		AMS 5643
Basis		A	B
F_tu, ksi	L	190	195
F_ty, ksi	L	170	175
F_cy, ksi	L	170	175
F_su, ksi	L	123	126
F_bru (e/D = 1.5), ksi	L	313	322
F_bru (e/D = 2.0), ksi	L	380	390
F_bry (e/D = 1.5), ksi	L	255	262
F_bry (e/D = 2.0), ksi	L	280	288
e, %	L	10	10
E, Msi		28.5	28.5
E_c, Msi		30	30
G, Msi		11.2	11.2
ν		0.27	0.27
ρ, lb/in3		0.282	0.282

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	98.6	98.9	99.2	98.8	99.7
200	95.1	94.1	93.7	95	94.9	95.3
300	91.9	90.5	88.1	90.8	90.5	91.2
400	89	87	82.2	86.2	86	87.1
500	85.9	83.5	76.5	81.2	81.2	82.5
600	83.9	80.6	70.3	76.1	75.9	77.7
700	81.7	78	63.6	70.2	69.8	72.3
800	78.1	74.3	56.4	63.9	63.2	66.5
1000	60.1	54.3	39	48.3	47.9

Factors in percent of the room-temperature allowable.

Other 17-4PH Tables

17-4PH Investment Casting (Table 2.6.9.0(f))
17-4PH-H1000 Investment Casting (Table 2.6.9.0(f))
17-4PH-H1025 Bar (Table 2.6.9.0(e))
17-4PH-H1025 Forging, tubing, and rings (Table 2.6.9.0(d))
17-4PH-H1025 Sheet, strip, and plate (Table 2.6.9.0(b))
17-4PH-H1075 Bar (Table 2.6.9.0(e))
17-4PH-H1075 Forging, tubing, and rings (Table 2.6.9.0(d))
17-4PH-H1075 Sheet, strip, and plate (Table 2.6.9.0(b))
17-4PH-H1100 Bar (Table 2.6.9.0(e))
17-4PH-H1100 Forging, tubing, and rings (Table 2.6.9.0(d))
17-4PH-H1100 Investment Casting (Table 2.6.9.0(f))
17-4PH-H1100 Sheet, strip, and plate (Table 2.6.9.0(b))
17-4PH-H1150 Bar (Table 2.6.9.0(e))
17-4PH-H1150 Forging, tubing, and rings (Table 2.6.9.0(d))
17-4PH-H1150 Sheet, strip, and plate (Table 2.6.9.0(b))
17-4PH-H1150Ma Bar (Table 2.6.9.0(e))
17-4PH-H1150Ma Forging, tubing, and rings (Table 2.6.9.0(d))
17-4PH-H900 Forging, tubing, and rings (Table 2.6.9.0(d))
17-4PH-H900 Sheet, strip, and plate (Table 2.6.9.0(b))
17-4PH-H925 Bar (Table 2.6.9.0(e))
17-4PH-H925 Forging, tubing, and rings (Table 2.6.9.0(d))
17-4PH-H925 Sheet, strip, and plate (Table 2.6.9.0(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.