Table 2.6.7.0: (b). Design Mechanical and Physical Properties of 15-5PH Stainless Steel Bar and Forging

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

Last Updated 29 Oct 2026

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Specification	AMS 5659
Form	Bar^a
Condition	H900	H925	H1025	H1075	H1100	H1150
Thickness or diam., in.	≤12	≤12	≤12	≤12	≤12	≤12
Basis	S	S	S	S	S	S
Mechanical Properties:
F_tu, ksi:
L	190	170	155	145	140	135
T	190	170	155	145	140	135
F_ty, ksi:
L	170	155	145	125	115	105
T	170	155	145	125	115	105
F_cy, ksi:
L			143	…		99
T			143	…		99
F_su, ksi:	…	…	97	…	…	85
F_bru^b, ksi:
(e/D = 1.5)	…	…	263	…	…	230
(e/D = 2.0)	…	…	332	…	…	293
F_bry^b, ksi:
(e/D = 1.5)	…	…	211	…	…	166
(e/D = 2.0)	…	…	250	…	…	201
e, percent:
L	10	10	12	13	14	16
T	6	7	8	9	10	11
RA, percent:
L	35	38	45	45	45	50
T	20	25	32	33	34	35
E, 10³ ksi	28.5
E_c, 10³ ksi	29.2
G, 10³ ksi	11.2
μ	0.27
Physical Properties:
ω, lb/in.³	0.283
C, Btu/(lb)(°F)
K and α	See Figure 2.6.7.0

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2.6.7.0 (c). Design Mechanical and Physical Properties of 15-5PH Stainless Steel Plate

Specification	AMS 5862
Form	Plate
Condition	H1025^a
Thickness, in.	0.187-0.625	0.626-2.000	2.001-3.000	3.001-4.000
Basis	S	S	S	S
Mechanical Properties:
F_nu, ksi:
L	154	154	154
LT	155	155	155	155
F_ty, ksi:
L	143	143	143
LT	145	145	145	145
F_cy, ksi:
L	150	150	150
LT	152	149	146
F_su, ksi	97	97	96
F_bru^b, ksi:
(e/D = 1.5)	257	257	257
(e/D = 2.0)	331	331	331
F_bry^b, ksi:
(e/D = 1.5)	211	211	211
(e/D = 2.0)	246	246	246
e, percent:
LT	8	12	12	12
RA, percent:
LT	35	40	40	40
E, 10³ ksi	28.5
E_c, 10³ ksi	29.2
G, 10³ ksi	11.2
μ	0.27
Physical Properties:
ω, lb/in.³	0.283
C, Btu/(lb)(°F)
K and α	See Figure 2.6.7.0

MIL-HDBK-5J