Material data: Osprey® 2507 super-duplex stainless steel

General description

Osprey^® 2507 is a super-duplex (austenitic-ferritic) stainless steel powder manufactured by inert gas atomization. The alloy is characterized by, for example:

Excellent corrosion resistance in chloride environments (PREN~ 43)
Excellent mechanical properties
High resistance to general corrosion

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Osprey^® 2507 metal powder is available in a range of customized powder sizes suitable for:

Binder Jet (AM)
Powder Bed Fusion (AM)
Direct Energy Deposition (AM)
Metal Injection Moulding (MIM)

Chemical composition

**Osprey® 2507 super-duplex, Chemical composition (nominal), wt%**
Fe	Cr	Ni	Mo	Mn	Si	N	Cu	C	P	S
Balance	25.0	7.0	4.0	<1.2	<0.8	0.30	<0.50	<0.030	<0.035	<0.015

Powder morphology

SEM micrographs of Osprey® 2507 a) -53 +15 µm powder with a spherical morphology, b) smooth surface and low level of powder satellites and c) micrograph of powder in cross-section, in back scatted electron mode, highlighting the fine cellular structure.

Powder size distribution

Available in a range of customized powder sizes suitable for different additive manufacturing technologies:

Metal Injection Moulding

< 32 µm, < 22 µm, <16 µm, < 10 µm and < 5 µm

Binder Jet

< 45 µm, < 38 µm, < 22 µm, < 16 µm

Laser beam - Powder Bed Fusion, (L-PBF)

e.g. 53 to 15 µm and 45 to 20 µm

Electron Beam - Powder Bed Fusion, (E-PFB)

106 to 45 µm

Direct Energy Deposition (DED)

150 to 53 µm and 90 to 45 µm

Other powder size range distributions are available by request.

Mechanical properties

Tensile properties

**Metric units**
Condition	Direction	Temperature	Proof strength	Tensile strength	E-modulus	Elongation
		T	R_p0.2	R_m		A
		°C	MPa	MPa	GPa	%
Heat treated	Horizontal	20	627	956	207	39
	Vertical	20	626	923	202	43
Heat treated	Horizontal	100	548	878	205	33
	Vertical	100	546	854	205	36
Heat treated	Horizontal	200	505	823	196	30
	Vertical	200	504	797	195	31
Heat treated	Horizontal	300	517	857	190	30
	Vertical	300	505	832	190	32

**Imperial units**
Condition	Direction	Temperature	Proof strength	Tensile strength	E-modulus	Elongation
		T	R_p0.2	R_m		A
		°F	ksi	ksi	ksi	%
Heat treated	Horizontal	68	90	138	30	39
	Vertical	68	90	133	29	43
Heat treated	Horizontal	212	79	127	30	33
	Vertical	212	79	123	30	36
Heat treated	Horizontal	392	73	119	28	30
	Vertical	392	73	116	28	31
Heat treated	Horizontal	572	74	124	28	30
	Vertical	572	73	121	28	32

Impact strength

**Metric units**
Condition	Direction	Temperature	Impact Energy
		T	W
		°C	J
Heat treated	Horizontal	-50	198
	Vertical	-50	235
Heat treated	Horizontal	0	237
	Vertical	0	250
Heat treated	Horizontal	20	242
	Vertical	20	247
Heat treated	Horizontal	50	248
	Vertical	50	263

**Imperial units**
Condition	Direction	Temperature	Impact Energy
		T	W
		°F	Ft-lb
Heat treated	Horizontal	-58	146
	Vertical	-58	173
Heat treated	Horizontal	32	174
	Vertical	32	184
Heat treated	Horizontal	68	178
	Vertical	68	182
Heat treated	Horizontal	122	182
	Vertical	122	194

Hardness

Typical Vicker’s Hardness levels (ASTM E92, ISO 6507-1, JIS Z2244, GB/T 4340.1), in the L-PBF heat-treated conditions.

Condition	Condition
	HV	HRC
Heat treated	282±8	29±1

Surface roughness

Condition	Surface Roughness
	Ra	Rz	Sa
	µm	µm	µm
Blasted	1,6	7,02	4,8

Corrosion properties

Corrosion properties tested on the bulk material as per the following standards.

Condition	Critical Pitting Temperature
	ASTM G48	ASTM G150
	°C	°C
Heat Treated	90	>95

Microstructure

A suitable heat treatment is carried out on the as-built parts in order to achieve the desired austenitic and ferritic microstructure in the final parts. Typically solution annealing between 1040-1110 °C followed by air or water cooling is performed.

Application areas

Typical applications areas for Osprey^® 2507 metal powder are components used in, for example, the following industries:

Oil and gas industry (e.g. impellers, propellers, connecting valves)
Pulp and paper industry
Chemical industry
Refineries and petrochemical plants
On-shore and off-shore industry

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Material data: Osprey® 2507 super-duplex stainless steel

General description

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Chemical composition

Chemical composition

Powder morphology