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Titanium Grade 2 Flanges Manufacturer and Supplier in India

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Titanium Grade 2 Flanges Manufacturer and Supplier in India
Titanium Grade 2 (UNS R50400) flanges are the most widely stocked commercially pure titanium flange grade, valued for their corrosion resistance, low weight and reliable weldability across weld neck, slip-on, blind and threaded configurations manufactured to ASTM B381 / ASME SB381. When talking about its strength and other properties, titanium grade 2 is smooth as a baby rattle with a minimum tensile strength of 344 MPa (49,900 psi). Strong, ductile and formable material. It has a naturally formed, thin layer of TiO₂ that gives excellent corrosion and chloride-induced pitting resistance to wet chlorine, nitric acid, organic acids, and saltwater. These flanges are stiffer than many stainless steel and nickel alloy flanges, with a density of about 4.51g/cm³. Sachina Steel is a manufacturer and supplier of Titanium Grade 2 Flanges in India, catering to various industrial piping needs.
Table Of Content

Technical Data

Specifications of Titanium Grade 2 Flanges

Parameter

Technical Specification

Material Specification

ASTM B381 / ASME SB381 (Forged Titanium Flanges)

Material Grade

Titanium Grade 2 / CP Grade 2

UNS Designation

UNS R50400

Werkstoff Number

3.7035 (DIN 17850 / EN 3.7035)

Dimensional Standards

ASME B16.5 (½″–24″), ASME B16.47 Series A & B (26″–48″), ASME B16.48, MSS SP-44, EN 1092-1, DIN standards

Nominal Pipe Size (NPS)

½″ to 48″ (DN15 through DN1200)

Pressure Class Ratings

Class 150#, 300#, 600#, 900#, 1500#, 2500# (PN6, PN10, PN16, PN25, PN40, PN64)

Flange Face Types

Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ), Tongue & Groove (T&G), Male & Female (M&F)

Certification & Testing

EN 10204 3.1 / 3.2 MTC, NACE MR0175 / MR0103, PMI, Hydrostatic, Radiography, TPI (SGS, BV, TUV)

Chemical Compositions of Titanium Grade 2 Flanges

Element

Titanium (Ti)

Iron (Fe)

Oxygen (O)

Carbon (C)

Nitrogen (N)

Hydrogen (H)

Specification Limit (wt%)

Balance (99.2% min)

0.30% max

0.25% max

0.10% max

0.03% max

0.015% max

Typical Mill Test

99.45%

0.12%

0.16%

0.02%

0.01%

0.003%

Titanium Grade 2 Flanges Mechanical Properties

Mechanical Property

Tensile Strength (Min)

Yield Strength (0.2% Offset, Min)

Yield Strength (0.2% Offset, Max)

Elongation in 2″ / 50mm (Min)

Reduction of Area (Min)

Metric Units

344 MPa

275 MPa

450 MPa

20%

30%

Imperial Units

49,900 psi

39,900 psi

65,250 psi

20%

30%

Physical Properties of Titanium Grade 2 Flanges

Physical Property

Value

Density

4.51 g/cm³ (0.163 lb/in³)

Melting Point

1665°C (3030°F)

Thermal Conductivity (20°C)

21.9 W/m · K (12.6 Btu/ft · h · °F)

Electrical Resistivity

0.52 μΩ · m

Specific Heat Capacity

523 J/kg · K (0.125 Btu/lb · °F)

Modulus of Elasticity (Young's)

105 GPa (15.2 × 10⁶ psi)

Poisson's Ratio

0.34

Hardness (Typical)

≈ 160–200 HBW (≈ 320–360 HV)

Titanium Grade 2 Flanges Equivalent Grades

Standard / Region

UNS (USA)

ASTM

ASME

Werkstoff (Germany)

DIN (Germany)

EN (Europe)

AFNOR (France)

JIS (Japan)

Grade / Designation

UNS R50400

ASTM B381 / B348 Gr 2

ASME SB381 / SB348 Gr 2

3.7035

Titanium Gr 2 (DIN 17850)

Titanium Gr 2 / EN 3.7035

T40

JIS Class 2 / KS 50

Weight Chart of Titanium Grade 2 Flanges

Standard

Class / Table

Nominal Size / PCD

Dia. of Bolt Circle (mm)

Bolt Size

No. of Bolts

Bolt Hole Diameter (mm)

AS4087

PN14

67

95

M12

4

14

ANSI B16.5

ANSI 150

60

89

1/2″ (13)

4

16

ANSI B16.5

ANSI 300

67

95

1/2″ (13)

4

16

ANSI B16.5

ANSI 600

67

95

1/2″ (13)

4

16

ANSI B16.5

ANSI 900

83

121

3/4″ (19)

4

22

ANSI B16.5

ANSI 1500

83

121

3/4″ (19)

4

22

AS 2129 Flange

Table C

67

95

1/2″ (13)

4

14

AS 2129 Flange

Table D

67

95

1/2″ (13)

4

14

AS 2129 Flange

Table E

67

95

1/2″ (13)

4

14

AS 2129 Flange

Table F

67

95

1/2″ (13)

4

14

AS 2129 Flange

Table H

83

114

5/8″ (16)

4

17

AS 2129 Flange

Table J

83

114

5/8″ (16)

4

17

ISO 7005 (DIN)

PN6

55

80

M10

4

11

ISO 7005 (DIN)

PN10

65

95

M12

4

14

ISO 7005 (DIN)

PN16

65

95

M12

4

14

ISO 7005 (DIN)

PN20

60.5

90

M14

4

16

ISO 7005 (DIN)

PN25

65

95

M12

4

14

ISO 7005 (DIN)

PN40

65

95

M12

4

14

Dimensions Chart of Titanium Grade 2 Flanges

NPS

OD

Min. Thickness (T)

Raised Face Dia. (R)

Bolt Circle (BC)

No. of Bolts

Dia. of Holes

WN Bore ID (WB)

SO Bore ID (SB)

Dia. Hub Base (HB)

Dia. of Hub Top (HT)

SO Length Thru Hub (SL)

WN Length Thru Hub (WL)

½″

3.50

0.38

1.38

2.38

4

0.62

0.62

0.88

1.19

0.84

0.56

1.81

¾″

3.88

0.44

1.69

2.75

4

0.62

0.82

1.09

1.50

1.05

0.56

2.00

1″

4.25

0.50

2.00

3.12

4

0.62

1.05

1.36

1.94

1.32

0.62

2.12

1¼″

4.62

0.56

2.50

3.50

4

0.62

1.38

1.70

2.31

1.66

0.75

2.19

1½″

5.00

0.62

2.88

3.88

4

0.62

1.61

1.95

2.56

1.90

0.81

2.38

2″

6.00

0.69

3.62

4.75

4

0.75

2.07

2.44

3.06

2.38

0.94

2.44

2½″

7.00

0.81

4.12

5.50

4

0.75

2.47

2.94

3.56

2.88

1.06

2.69

3″

7.50

0.88

5.00

6.00

4

0.75

3.07

3.57

4.25

3.50

1.12

2.69

3½″

8.50

0.88

5.50

7.00

8

0.75

3.55

4.07

4.81

4.00

1.19

2.75

4″

9.00

0.88

6.19

7.50

8

0.75

4.03

4.57

5.31

4.50

1.25

2.94

5″

10.00

0.88

7.31

8.50

8

0.88

5.05

5.66

6.44

5.56

1.38

3.44

6″

11.00

0.94

8.50

9.50

8

0.88

6.07

6.72

7.56

6.63

1.50

3.44

8″

13.50

1.06

10.62

11.75

8

0.88

7.98

8.72

9.69

8.63

1.69

3.94

10″

16.00

1.12

12.75

14.25

12

1.00

10.02

10.88

12.00

10.75

1.88

3.94

12″

19.00

1.19

15.00

17.00

12

1.00

12.00

12.88

14.38

12.75

2.12

4.44

14″

21.00

1.31

16.25

18.75

12

1.12

13.25

14.14

15.75

14.00

2.19

4.94

16″

23.50

1.38

18.50

21.25

16

1.12

15.25

16.16

18.00

16.00

2.44

4.94

18″

25.00

1.50

21.00

22.75

16

1.25

17.25

18.18

19.88

18.00

2.62

5.44

20″

27.50

1.62

23.00

25.00

20

1.25

19.25

20.20

22.00

20.00

2.81

5.62

22″

29.50

1.75

25.25

27.25

20

1.38

21.25

22.22

24.25

22.00

3.07

5.82

24″

32.00

1.81

27.25

29.50

20

1.38

23.25

24.25

26.12

24.00

3.19

5.94

All dimensions in inches unless otherwise noted.

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Types of Titanium Grade 2 Flanges

Titanium Gr.2 Lap Joint Flange

Titanium Gr.2 Lap Joint Flange

Titanium Grade 2 Slip on Flange

Titanium Grade 2 Slip on Flange

Alloy Gr 2 Ring Type Joint Flange

Alloy Gr 2 Ring Type Joint Flange

Ti Alloy Gr 2 Blind Flange

Ti Alloy Gr 2 Blind Flange

Titanium Alloy Gr.2 Weld Neck Flange

Applications and Industrial Uses of Titanium Grade 5 Flanges

  • Chemical Processing Plants
  • Chlor-Alkali Plants
  • Desalination Plants
  • Marine & Offshore Systems
  • Power Generation Plants
  • Petrochemical Industries
  • Pulp & Paper Plants
  • Heat Exchanger & Cooling Systems
Application Industries

Frequently Asked Questions

Titanium Grade 2 Flanges are piping components made from commercially pure titanium Grade 2, used to connect pipes, valves, pumps, and other equipment.
They offer excellent corrosion resistance, a high strength-to-weight ratio, low density, and good resistance to seawater and many chemicals.
It connects pipe sections or equipment in corrosive process lines — chemical processing, desalination, marine and power-generation piping — where light weight and seawater resistance matter.
No. Grade 2 (40-55 ksi yield) is chosen for ductility and cost; Grade 5 (Ti-6Al-4V, ~138 ksi yield) is chosen where higher bolt-load or mechanical strength is required.
Class 150 through 2500 (or PN6 through PN64) per ASME B16.5, in weld neck, slip-on, blind, socket weld and threaded configurations.
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