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MSS SP-43 ASTM A403 UNS S31254 Seamless Stub End 8″ SCH20

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MSS SP-43 ASTM A403 UNS S31254 Seamless Stub End 8″ SCH20

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Model Number :	MSS SP-43 ASTM A403 UNS S31254 Seamless Stub End 8″ SCH20
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MSS SP-43 ASTM A403 UNS S31254 Seamless Stub End 8″ SCH20

1. Key Specifications / Features

Type: UNS S31254 Seamless Stub End
Material: F44 (254SMO,UNS S31254,EN 1.4547)
Size: 8″
Standard: MSS SP-43
WT: SCH20

2. Chemical Composition and Mechanical Property for F44 (254SMO,UNS S31254,EN 1.4547)

Chemical Composition and Mechanical Property for F44 (254SMO,UNS S31254,EN 1.4547)

Steel Grade

Chemical Composition

Mechanical Performance

C(Max)

Si(Max)

Mn(Max)

P(Max)

S(Max)

Tensile Strength
(Min),Mpa

Yield Strength
(Min),Mpa

F44 (254SMO,UNS S31254,EN 1.4547)

0.02

0.80

1.00

0.030

0.010

17.50–18.50

19.50–20.50

0.18-0.25

6.00-6.50

0.50-1.00

680

300

3. Table of Contents

1 Dimensions butt welded Stub Ends schedule 10S MSS SP-43 type A/B

2 DIMENSIONAL TOLERANCES OF STUB ENDS MSS SP-43

20200323072533 41007 - MSS SP-43 ASTM A403 UNS S31254 Seamless Stub End 8" SCH20

Dimensions butt welded Stub Ends schedule 10S MSS SP-43 type A/B

NPS	OD	T	G	F	R Type A	R Type B
4	114.3	3.05	157.2	76.2	11.18	0.76
5	141.3	3.40	185.7	76.2	11.18	1.52
6	168.3	3.40	215.9	88.9	12.7	1.52
8	219.1	3.76	269.9	101.6	12.7	1.52
10	273.1	4.19	323.9	127	12.7	1.52
12	323.9	4.57	381	152.4	12.7	1.52
14	355.6	4.78	412.8	152.4	12.70	1.52
16	406.4	4.78	469.9	152.4	12.7	1.52
18	457.2	4.78	533.4	152.4	12.70	1.52
20	508	5.54	584.2	152.4	12.70	1.52
24	609.6	6.35	692.2	152.4	12.7	1.52

Dimensions are in millimeters unless otherwise indicated. Weights are in kilograms and approximately given.

DIMENSIONAL TOLERANCES OF STUB ENDS MSS SP-43

Nominal Pipe Size	1/2 up to 2.1/2	3 to 3.1/2	4	5 to 8	10 to 18	20 to 24
Outside Diameter at Welding End (OD)	0.8	0.8	0.8	+ 1.6 – 0.8	+ 2.29 – 0.76	+ 3.05 – 0.76
Overall Length (F)	1.6	1.6	1.6	1.6	2	2
Outside Diameter of Lap (G)	+ 0 – 0.76	+ 0 – 0.76	+ 0 – 0.76	+ 0 – 0.76	+ 0 – 1.6	+ 0 – 1.6
Thickness of Lap (T)	+ 1.52 – 0	+ 1.52 – 0	+ 1.52 – 0	+ 1.52 – 0	+ 1.52 – 0	+ 1.52 – 0
Fillet Radius of Lap (R)	+ 0 – 0.76	+ 0 – 0.76	+ 0 – 1.6	+ 0 – 1.6	+ 0 – 1.6	+ 0 – 1.6
Wall Thickness (t)	Not less than 87.5% of Nominal Wall Thickness

Dimensional tolerances are in millimeters unless otherwise indicated.

Notes:

Type A for Lap Joint Flanges
Type B for Slip On Flanges
MSS SP-43 only covers stainless steel buttweld fittings made for use with Schedule 5S and 10S pipe and Stub Ends suitable for use with Schedule 40S pipe, as defined in ASME B36.19. The dimensions and dimensional tolerances defined in MSS SP-43 are substantially the same as those in ASME B16.9 specifications from NPS 1/2 – NPS 24. Except with regard to the outside diameter at the bevel.

MSS SP-43 ASTM A403 UNS S31254 Seamless Stub End 8″ SCH20

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