ASTM A789 UNS S31803 tube | SA 789 S31803 seamless / welded tubing

We have Answers

Most trusted SA 789 S31803 seamless tubing suppliers in India

Table of Content

ASTM A789 UNS S31803 tube specification

Sizes	Standard	Schedule
Outside Diameter: 0.5" - 24" Wall Thickness: 6mm-30mm	ASTM A789 / ASME SA789	SCH 5 to SCH XXS
ASTM A789 UNS S31803 tube Ends	Surface	Type
Beveled Straight cut Plain	Black painting 3PE PP FBE	Seamless ERW Welded
Cutting techniques	Delivery Conditions	Testing Provided By Supplier
Burrless Cuts Tapping Sawing Water-Jet	Cold Drawn Quenched and Tempered Normalizing Formed Hot Rolled Normalized and Tempered Normalizing Rolled	NACE TM0177 SSC TEST HIC TEST H2 SERVICE NACE MR0175 NACE TM0284 IBR
Manufacturing technique	Origin	Packaging
Hot rolled Cold rolled	Korean Russian European Indian US Ukraine Japanese	Loose Plastic Cloth Wraps Wooden box-a Wooden Pallet Bundle
Payment terms	Length	Form
L/C T/T	Single Random Double Random Cut length	Round Rectangular Square
Marking on SA 789 S31803 seamless tube	Value Added Services	International standards
Length OD name Grade Thickness Heat No. Standard Manufacturer/Supplier	Draw Sand Blasting Shot Blasting Heat Treatment Machining Expansion Galavanizing	BS - UNI ISO GB 5310 ASTM/ASME DIN -NF A JIS GOST EN

Various types of A789 S31803 tubes

SA 789 UNS S31803 chemical composition

UNS	C Max	Mn max	P max	S max	Si max	Ni	Cr	Mo	N	Cu	Others
S31803	0.03	2	0.03	0.02	1	4.5-6.5	21.0-23.0	2.5-3.5	0.08-0.20	-	-

ASTM A789 S31803 mechanical properties

A789 S31803 Welded tube equivalent grade

SA 789 S31803 tubing physical properties

Grade	Specific Heat 0-100°C ( J/kg.K)	Density (kg/m3)	Thermal Conductivity (W/m.K)		Mean Co-eff of Thermal Expansion (μm/m/°C)			Elastic Modulus (GPa)	Electrical Resistivity (nΩ.m)
			at 100°C	at 500°C	0-100°C	0-315°C	0-538°C
UNS S31803	418	782	19	-	13.7	14.2	-	190	850

Heat treatment of A789 S31803 heat exchanger tube

UNS Designation	Temperature	Quench
S31803	1870-2010 °F [1020-1100°C]	Rapid cooling in air or water

Standard sizes of ASTM A789M S31803 tube

Outside Diameter (inch)	WALL GAUGE	Inside Diameter (inch)	WEIGHT PER FEET (LBS)
1/8	22	.069	.029
1/8	20	.055	.034
3/16	22	.132	.048
3/16	20	.118	.057
1/4	22	.194	.066
1/4	20	.180	.080
1/4	18	.152	.105
1/4	16	.120	.128
5/16	22	.257	.085
5/16	20	.243	.104
5/16	18	.215	.138
5/16	16	.183	.172
3/8	22	.319	.104
3/8	20	.305	.127
3/8	18	.277	.171
3/8	16	.245	.215
7/16	20	.368	.151
7/16	18	.340	.204
7/16	16	.308	.259
1/2	22	.444	.141
1/2	20	.430	.174
1/2	18	.402	.236
1/2	16	.370	.302
1/2	13	.310	.411
5/8	22	.569	.179
5/8	20	.555	.221
5/8	18	.527	.301
5/8	16	.495	.389
5/8	14	.459	.481
5/8	11	.385	.647
3/4	20	.680	.267
3/4	18	.652	.367
3/4	16	.620	.476
3/4	13	.560	.665
3/4	11	.510	.807
7/8	20	.805	.314
7/8	18	.777	.432
7/8	16	.745	.562
7/8	11	.635	.968
1	20	.930	.361
1	18	.902	.498
1	16	.870	.649
1	14	.834	.813
1	13	.810	.918
1	11	.760	1.128
1	3/16	.625	1.630
1 1/4	20	1.180	.454
1 1/4	18	1.152	.629
1 1/4	16	1.120	.823
1 1/4	14	1.084	1.034
1 1/4	11	1.010	1.448
1 1/2	20	1.430	.548
1 1/2	18	1.402	.759
1 1/2	16	1.370	.996
1 1/2	14	1.334	1.256
1 1/2	11	1.260	1.769
1 1/2	3/16	1.124	2.634
1 3/4	20	1.680	.641
1 3/4	18	1.652	.890
1 3/4	16	1.620	1.170
1 3/4	11	1.510	2.089
1 3/4	3/16	1.375	3.136
1 7/8	13	1.685	1.806
2	20	1.930	.733
2	18	1.902	1.021
2	16	1.870	1.343
2	14	1.834	1.699
2	11	1.760	2.409
2	3/16	1.625	3.638
2 1/4	16	2.120	1.517
2 1/2	18	2.402	1.283
2 1/2	.065	2.370	1.690
2 1/2	14	2.334	2.143
2 1/2	11	2.260	3.050
2 3/4	11	2.510	3.371
3	16	2.870	2.037
3	14	2.834	2.586
3	.109	2.782	3.365
3	11	2.760	3.691
3 1/4	11	3.010	4.011
3 1/2	16	3.370	2.385
3 1/2	11	3.260	4.332
4	16	3.870	2.732
4	14	3.834	3.472
4	11	3.760	4.973
5	11	4.760	6.254
6	11	5.760	7.536

Temperature range of SA 789 S31803 tubing

Temperature range	below 600° F

Applications of ASME SA789 S31803 boiler tubing