ASME SB 444 Tube | ASTM B444 Seamless Pipe manufacturer in India

What is SB 444 Tube?

SB44 material can be heat treated to enhance the mechanical and corrosion resistance properties. The ASME SB 444 Tube is primarily found in heat exchangers and superheaters. They are manufactured according to the SB444 UNS N06625 specification. The tubes have elements like nickel, molybdenum, chromium and columbium in their chemical composition.

The ASTM B444 Pipe material is commercially popular as the proprietary brand Inconel 625. They have high tensile strength and yield strength, and they are used for services at a high temperature conditions. The material can resist corrosion including pitting, crevice, stress, fatigue and erosion in different organic and mineral acids

SB 444 UNS N06219 material and ASTM B444 Seamless pipe manufacturer in India

What is annealed ASTM B444 Pipe?

The B444 material can be furnished in two grades which has different heat treated conditions. One of them is in the annealed condition, wherein the ASTM B444 gr1 tube is heat treated to remove its internal stress and increase ductility. The procedure involves heating the material to a temperature no less than 871°C, and then it is cooled down slowly.

This happens through the transformation range inside the furnace. With annealing, one can expect more refined grain structure of the UNS N06219 pipe which induces softness, and improves electric and magnetic properties. Annealing can also sometimes help to improve machinability.

One of the oldest ASTM B444 pipe and UNS N06219 nickel alloy tubing supplier in Gujarat

ASME SB 444 Tube

ASTM B444 Pipe

ASTM B444 Seamless Pipe

ASTM B444 gr1 vs ASTM B444 grade 2

The ASTM B444 grade is available in two grades, with different heat treated conditions. The ASTM B444 gr1 Tube is annealed, and they are normally employed in service temperatures up to 593°C.

The grade 2 Pipe is solution annealed wherein they are employed above the service temperature of 593 degrees C. The ASTM B444 grade 2 tubes are used in services where resistance to creep and rupture is a primary requirement. Unless specified, generally grade 1 is supplied by the manufacturers.

Cut to size ASTM B444 seamless tube available in 4mm to 219mm diameters. Order custom length of UNS N06625 welded pipe online

Table of Contents

Specifications of ASME SB 444 tube
ASTM B444 pipe types
ASTM B444 seamless pipe weight chart
ASTM B444 GR1 tube mechanical properties
ASTM B444 Grade 2 pipe equivalent
Pressure rating of ASTM B443 UNS N06219 material
SB 444 UNS N06219 material chemical composition
UNS N06219 nickel alloy tubing length
Applications of ASTM B444 tubing
ASME SB 444 tube tolerance chart

Specifications of ASME SB 444 tube

Alloy	Finishes	Outside Diameter
UNS N06625, Alloy 625	Solution Annealed And Pickling, Bright Annealing	0.188″ – 1.500″
Thickness	Type	Standard
0.028″ – 0.083″	Seamless Tube	ASTM B444, ASME SB444
Temperature	Test	Grades
up to 1100°F	Nondestructive Electric Test, Hydrostatic Test	Grade 1 (annealed) Grade 2 (solution annealed)

Check dimension and weight chart of ASTM B444 GR1 tube and ASTM B444 coiled tubing as per AMS, ASTM, EN, ASME standard

ASTM B444 pipe types

ASTM B444 gr1 Tube

ASTM B444 grade 2 Pipe

ASTM B443 UNS N06219 material

SB 444 UNS N06219 material

UNS N06219 Nickel Alloy Tubing

ASTM B444 Tubing

ASTM B444 Grade 2 pipe manufacturer in Gujarat, view ASME SB 444 material dimensional tolerances & chemical composition

ASTM B444 seamless pipe weight chart

Nominal Pipe Sizes	(WT) Wall Thickness		(Outer Dia) Outside Diameter			Weight	Weight
Nominal Pipe Sizes	Inch	MM	Inch	MM	Schedule	LBS / Feet	Kilogram/ Meter
1/2	0.109	2.769	0.840	21	40 STD	0.851	1.268
	0.147	3.734			80 STD	1.088	1.621
3/4	0.113	2.870	1.050	27	40 STD	1.131	1.684
	0.154	3.912			80 STD	1.474	2.195
1	0.133	3.378	1.315	33	40 STD	1.679	2.501
	0.179	4.547			80 STD	2.172	3.325
1 1/4	0.140	3.556	1.660	42	40 STD	2.273	3.385
	0.191	4.851			80 STD	2.997	4.464
1 1/2	0.145	3.683	1.900	48	40 STD	2.718	4.048
	0.200	5.080			80 STD	3.361	5.409
2	0.154	3.912	2.375	60	40 STD	3.653	5.441
	0.218	5.537			80 STD	5.022	7.480
2 1/2	0.203	5.516	2.875	73	40 STD	5.793	8.629
	0.276	7.010			80 STD	7.661	11.411
3	0.216	5.486	3.500	89	40 STD	7.576	11.284
	0.300	7.620			80 STD	10.253	15.272
4	0.237	6.020	4.500	114		10.790	16.073
	0.337	8.560				14.983	22.318
6	0.188	4.775	6.625	168		12.924	19.252
	0.203	5.516				13.923	20.739
	0.219	5.563				14.983	22.318
	0.250	6.350				17.021	25.354
	0.280	7.112			40 STD	18.974	58.263
	0.312	7.925				21.036	31.334
	0.375	9.525				25.031	37.285
	0.432	10.973			80 XHY	28.573	42.561
	0.500	12.700				32.708	48.719
8	0.188	4.775	8.625	219		16.940	25.233
	0.203	5.156				18.259	27.198
	0.219	5.563				19.661	29.286
	0.250	6.350			20	22.361	33.308
	0.277	7.036			30	24.696	36.786
	0.322	8.179			40	28.554	42.352
	0.375	9.525				33.041	49.216
	0.406	10.312			60	35.638	53.085
	0.500	12.700			80 XHY	43.388	64.627
10	0.188	4.775	10.750	273		21.207	31.588
	0.219	5.563				24.631	36.689
	0.250	6.350			20	28.035	41.759
	0.307	7.798			30	34.240	51.002
	0.344	8.738				38.231	56.946
	0.365	9.271			40 STD	40.483	63.301
	0.438	11.125				48.238	71.852
	0.500	12.700			60 XHY	54.735	81.530
	0.594	15.088			80	64.429	95.969
14	0.188	4.775	14.000	356		27.732	41.308
	0.219	5.563				32.233	48.012
	0.250	6.350			20	36.713	54.685
	0.281	7.137				41.172	61.327
	0.312	7.925				45.611	67.939
	0.375	9.525			STD	54.568	81.281
	0.438	11.125			40	63.441	94.498
	0.500	12.700			XHY	72.090	107.381
	0.625	15.875				89.278	132.983
16”	0.188	4.775	16.000	406		21.748	47.290
	0.219	5.563				36.910	54.980
	0.250	6.350			10	42.053	62.639
	0.281	7.137				47.174	70.268
	0.312	7.925			20	52.275	77.866
	0.344	8.738				57.519	85.677
	0.375	9.525			30 STD	62.578	93.213
	0.438	11.125				72.797	108.433
	0.500	12.700			40 XHY/td>	82.770	123.289
12	0.188	4.775	12.750	324		25.222	37.570
	0.219	5.563				29.309	43.657
	0.250	6.350				33.375	49.713
	0.281	7.137				37.420	55.739
	0.312	7.925				41.445	61.735
	0.375	9.525				49.562	73.824
	0.406	10.312				53.525	79.727
	0.500	12.700				65.415	97.438
	0.562	14.275				73.154	108.966
18	0.219	5.563	18.000	457		41.588	61.948
	0.250	6.350				47.393	70.593
	0.281	7.137				53.176	79.208
	0.312	7.925			20	58.939	87.792
	0.375	9.525			STD	70.588	105.144
	0.438	11.125			30	82.152	122.369
	0.500	12.700			XHY	93.450	139.198
	0.562	14.275			40	104.666	155.904
	0.625	15.875				115.978	172.754
20	0.250	6.350	20.000	508		52.733	78.547
	0.282	7.163				59.386	88.458
	0.312	7.925				65.604	97.719
	0.375	9.525			20 STD	78.598	117.075
	0.438	11.125				91.508	136.305
	0.500	12.700			30 XHY	104.130	155.106
	0.594	15.088			40	123.110	183.378
	0.625	15.875				129.328	192.640
	0.688	17.475				141.901	211.368
24	0.250	6.350	24.000	610		63.413	94.456
	0.281	7.137				71.183	106.029
	0.312	7.925				18.932	117.573
	0.375	9.525			20 STD	64.618	140.938
	0.438	11.125				110.219	164.176
	0.500	12.700			XHY	125.490	186.923
	0.625	15.875				156.028	232.410
	0.688	17.475			40	171.293	255.148
	0.750	19.050				186.233	277.401
30	0.250	6.350	30.000	762		79.433	118.318
	0.281	7.137				89.189	132.851
	0.312	7.925			10	98.925	147.353
	0.375	9.525			STD	118.648	176.731
	0.438	11.125				138.286	205.983
	0.500	12.700			20 XHY	157.530	234.647
	0.625	15.875			30	196.078	292.066
	0.688	17.475				215.380	320.817
	0.750	19.050				234.293	348.988
36	0.250	6.350	36.000	914		95.453	142.180
	0.281	7.137				107.196	159.672
	0.312	7.925			10	118.918	177.133
	0.375	9.525			STD	142.678	215.525
	0.438	11.125				166.353	247.790
	0.500	12.700			20 XHY	198.570	282.372
	0.625	15.875				236.128	351.723
	0.688	17.475				259.467	386.487
	0.750	19.050				282.353	420.576
42	0.312	7.925	42.000	1067		138.911	206.914
	0.375	9.525			STD	166.708	248.319
	0.500	12.700			XHY	221.610	33.097
	0.750	19.050				330.413	492.163
48	0.375	9.525	48.000	1219	STD	190.738	284.112
	0.438	11.125				222.487	331.404
	0.500	12.700			XHY	253.650	377.822
	0.750	19.050				378.473	563.750
	0.875	22.225				440.383	655.969

ASTM B444 GR1 tube mechanical properties

Grade	Yield Strength 0.2% Proof (Minimum)	Tensile Strength (Minimum)	Elongation (Minimum)	Hardness
				Rockwell B (Maximum)	Brinell (HB) (Maximum)
ASTM B 444	PSI – 75,000, MPA – 517	PSI – 1,35,000, MPA -930	42.5	–	–

ASTM B444 Grade 2 pipe equivalent

Grade	Old British		UNS Number	Euronorm		Japanese	GOST
	BS	En		No	AFNOR
ASTM B444	NA 21	NiCr22Mo9Nb	N06625	2.4856	NC22DNB4M	NCF 625	ХН75МБТЮ

Pressure rating of ASTM B443 UNS N06219 material

Size in Milimeter	Maximum internal pressure, ksi
	100°F	200°F	300°F	400°F	500°F	600°F	700°F
6 x1	940	940	930	921	907	888	869
8x1	681	681	675	668	658	644	630
16x1	324	324	321	318	313	307	300
8x2	1476	1476	1462	1447	1425	1395	1366
3 x 0.5	940	940	930	921	907	888	869

SB 444 UNS N06219 material chemical composition

Grades		Manganese	Carbon	Silicon	Iron	Sulfur	Aluminium & titanium	Chromium	Nickel
ASTM B444	Minimum	–	–	–	–	–	–	20.0	58.0
ASTM B444	maximum	0.50	0.10	0.50	5.0	0.015	0.40	23.0	–

UNS N06219 nickel alloy tubing length

Tube Size , inches (milimeter)	Length , ft (meter)	PermissibleVariation, inches (mm)
Tube Size , inches (milimeter)	Length , ft (meter)	Over	Under
up to 1.250(31.8), incl	Under 1 (0.30)	1/32 (0.8)	0 (0)
up to 1.250(31.8), incl	1 (0.30) to 4 (1.22), incl	1/16 (1.6)	0 (0)
up to 1.250(31.8), incl	Over 4 (1.22) to 10 (3.0), incl	3/32 (2.4)	0 (0)
up to 1.250(31.8), incl	Over 10 (3.0)	3/16 (4.8)	0 (0)

Applications of ASTM B444 tubing

Chemical process industry and sea water application
Sulfur dioxide cooling towers
Pharmaceutical and plastics Industry
Heat exchangers and Boilers
Mixing Tanks
Pickling Operations
Phosphoric acid production
Weld overlay
Flue gas scrubber systems
Nuclear fuel reprocessing

ASME SB 444 tube tolerance chart

Outside Diameter, Mm	Wall Thickness Tolerance, %	ID Tolerance, Mm	Outer Dia Tolerance, Mm
Outer Dia＜2.4	±10	+0/-0.05	+0.05/-0
2.4≤Outer Dia＜4.8	±10	+0/-0.08	+0.08/-0
4.8≤Outer Dia＜12.7	±10	+0/-0.10	+0.10/-0
12.7＜Outer Dia≤31.8	±10	+0/-0.13	+0.13/-0

What is ASTM B443 UNS N06219?

The ASTM B443 UNS N06219 material specification covers rolled nickel, chromium, columbium and molybdenum alloy in the form of sheets, plates and strips. The standard does not address all the safety concerns, if any, associated with its usage. It is the responsibility of the users to become familiar with the hazards associated with the SB 444 UNS N06219 material standard.

It would include all those identified in the appropriate Material Material Data Sheet provided by the manufacturer. This helps to establish all the required safety and health practices and determine the applicability of regulatory limitations before using the UNS N06219 Nickel Alloy material.