B 668 N08028 - Cast Iron and Cast Steel

UNS N08028 Seamless Pipe and Tube

**B 668 N08028** Application:UNS N08028 Seamless Pipe and Tube
Category	Type	Grade	Microstructure	Designations
Grades	Stainless Steels	B 668 N08028	Austenite	USA - SAE , B 668 (2010) - UNS N08028 Seamless Pipe and Tube

B 668 N08028 Application:UNS N08028 Seamless Pipe and Tube

Category

Type

Grade

Microstructure

Designations

Grades

Stainless Steels

B 668 N08028

Austenite

USA - SAE , B 668 (2010) - UNS N08028 Seamless Pipe and Tube

Chemical composition(mass fraction)(wt.%)
Elements	Min.（≥）	Max.（≤）
C	-	0.02
Mn	-	2.00
Si	-	1.00
P	-	0.02
S	-	0.015
Cr	26.00	28.00
Ni	29.50	32.50
Mo	3.00	4.00
Cu	0.60	1.40

Chemical composition(mass fraction)(wt.%)

Elements

Min.（≥）

Max.（≤）

Similar

Remarks

0.02

2.00

1.00

0.02

0.015

26.00

28.00

29.50

32.50

3.00

4.00

0.60

1.40

Mechanical properties of grade B 668 N08028
Proof strength R_p0.2 (MPa)	Tensile strength R_m (MPa)	Impact energy KV (J)	Elongation at fracture A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
138 (≥)	396 (≥)	44	32	11	Solution and Aging, Annealing, Ausaging, Q+T,etc	323

Mechanical properties of grade B 668 N08028

Proof strength
R_p0.2 (MPa)

Tensile strength
R_m (MPa)

Impact energy
KV (J)

Elongation at fracture
A (%)

Reduction in cross section on fracture
Z (%)

As-Heat-Treated Condition

Brinell hardness (HBW)

138 (≥)

396 (≥)

Solution and Aging, Annealing, Ausaging, Q+T,etc

323

Physical properties of grade B 668 N08028
Property	Density kg/dm3	Temperature T °C/F	Specific heat J / kgK	Thermal conductivity W/mK	Electric resistance µΩ·cm	Modulus of elasticity kN/mm2	Expansion rate
321 (≥)	823 (≥)	21	44	42	Solution and Aging, Annealing, Ausaging, Q+T,etc	211
566	852	647

Physical properties of grade B 668 N08028

Property

Density
kg/dm3

Temperature T
°C/F

Specific heat
J / kgK

Thermal conductivity
W/mK

Electric resistance
µΩ·cm

Modulus of elasticity
kN/mm2

Expansion rate

321 (≥)

823 (≥)

Solution and Aging, Annealing, Ausaging, Q+T,etc

211

Temp.
°C/°F

Creep strain limit
(10000h)
(Rp1,0) N/mm2

Creep rupture strength
(10000h)
(Rp1,0) N/mm2

566

852

647

B 668 N08028 Range of products
Product type	Products	Dimension	Processes	Deliver Status
Plates / Sheets	Plates / Sheets	0.08-200mm(T)WL	Forging, hot rolling and cold rolling	Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar	Round Bar, Flat Bar, Square Bar	Φ8-1200mm*L	Forging, hot rolling and cold rolling, Cast	Black, Rough Turning, Shot Blasting,
Coil / Strip	Steel Coil /Steel Strip	0.03-16.0x1200mm	Cold-Rolled & Hot-Rolled	Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes	Seamless Pipes/Tubes, Welded Pipes/Tubes	OD:6-219mm x WT:0.5-20.0mm	Hot extrusion, Cold Drawn, Welded	Annealed, Solution and Aging, Q+T, ACID-WASHED

B 668 N08028 Range of products

Product type

Products

Dimension

Processes

Deliver Status

Plates / Sheets

0.08-200mm(T)*W*L

Forging, hot rolling and cold rolling

Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting

Steel Bar

Round Bar, Flat Bar, Square Bar

Φ8-1200mm*L

Forging, hot rolling and cold rolling, Cast

Black, Rough Turning, Shot Blasting,

Coil / Strip

Steel Coil /Steel Strip

0.03-16.0x1200mm

Cold-Rolled & Hot-Rolled

Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting

Pipes / Tubes

Seamless Pipes/Tubes, Welded Pipes/Tubes

OD:6-219mm x WT:0.5-20.0mm

Hot extrusion, Cold Drawn, Welded

Annealed, Solution and Aging, Q+T, ACID-WASHED

Cross Reference Table(Equivalent Grade)
Grade	Standard	Country	Application
B 668 N08028	SAE	USA	UNS N08028 Seamless Pipe and Tube
B 709 N08028	SAE	USA	Iron-Nickel-Chromium-Molybdenum Alloy (UNS N08028)* Plate, Sheet, and Strip
N08028	AISI	USA	Ni-Fe-Cr Alloy Solid Solution Strengthened
SB-668 N08028	AMS	USA	UNS N08028 Seamless Pipe and Tube
SB-709 N08028	AMS	USA	Iron-Nickel-Chromium-Molybdenum Alloy (UNS N08028)* Plate, Sheet, and Strip
GH3128	GB	China	Classification and designation for superalloys and high temperature intermetallic materials
A 276 XM-28	SAE	USA	Stainless Steel Bars and Shapes
A 313 Type XM-28	SAE	USA	Stainless Steel Bars and Shapes
A 314 XM-28	SAE	USA	Stainless Steel Bars and Shapes
A 580 Type XM-28	SAE	USA	Stainless Steel Wire
A 955 XM-28 Grade 280	SAE	USA	Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement
A 955 XM-28 Grade 40	SAE	USA	Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement
A 955 XM-28 Grade 420	SAE	USA	Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement
A 955 XM-28 Grade 520	SAE	USA	Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement
A 955 XM-28 Grade 60	SAE	USA	Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement
A 955 XM-28 Grade 75	SAE	USA	Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement
A 959 Type XM-28	SAE	USA	Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
SA-276 XM-28	AMS	USA	Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
XM-28	SAE	USA	Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
A 276 S24100	SAE	USA	Stainless Steel Bars and Shapes

Cross Reference Table(Equivalent Grade)

Grade

Standard

Country

Application

B 668 N08028

SAE

USA

UNS N08028 Seamless Pipe and Tube

B 709 N08028

SAE

USA