Tools › Materials › Steel › 250 Maraging-Maraged at 900 F Sheet

250 Maraging-Maraged at 900 F Sheet: MIL-HDBK-5J Design Allowables

show US units (ksi, Msi, lb/in³) open the MIL-HDBK-5J tool compare against temperature find alternatives

Material class	Steel
Alloy / temper / form	250 Maraging / Maraged at 900 F / Sheet
Specifications	AMS 6520
Handbook	MIL-HDBK-5J, 31 January 2003, section 2.5.1.0, Table 2.5.1.0(b) (pdf page 94 of the chapter file)
Dimension bands	1
Density	7916 kg/m³

Design Mechanical and Physical Properties (room temperature)

Converted from the handbook table (ksi, Msi, lb/in³) and rounded to 4 significant figures; dimension bands in inches with mm in parentheses. 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		0.000–0.187 in (0–4.75 mm)
Specification		AMS 6520
Basis		S
F_tu, MPa	L	1703
F_tu, MPa	LT	1758
F_ty, MPa	L	1641
F_ty, MPa	LT	1689
F_cy, MPa	L	1524
F_cy, MPa	LT	1551
F_su, MPa	L	1020
F_su, MPa	LT	1020
F_bru (e/D = 1.5), MPa	L	2255
F_bru (e/D = 1.5), MPa	LT	2255
F_bru (e/D = 2.0), MPa	L	3061
F_bru (e/D = 2.0), MPa	LT	3061
F_bry (e/D = 1.5), MPa	L	1917
F_bry (e/D = 1.5), MPa	LT	1917
F_bry (e/D = 2.0), MPa	L	2434
F_bry (e/D = 2.0), MPa	LT	2434
e, %	L	…
e, %	LT	4
ν		0.31
ρ, kg/m³		7916

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

°C	F_tu	F_ty	F_cy	F_su	F_bru	F_bry
-184	118.6	118
-129	112.7	109.6
-73	107.7	105.3
-18	103	101.8
38	98.8	99.3	98.4	99.2	99.8	99.1
93	94	95.8	92.5	94.9	97.2	95
149	90.4	92.6	88.4	90.8	94.9	92
204	87.6	89.3	85.4	86.4	92.4	88.9
26	86.4	86.3	83.2	82.2	89.6	86.2
316	85.4	83.3	81.7	78.4	86.8	83.5
371	83.4	79.9	79.4	76.5	83	79.6
427	78.9	77.1	75.8	76.1	77.4	74.2
538	61.1	53.2

Factors in percent of the room-temperature allowable.

Other 250 Maraging Tables

250 Maraging-Maraged at 900 F Bar (Table 2.5.1.0(b))
250 Maraging-Maraged at 900 F Plate (Table 2.5.1.0(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.