Alloy 20 Seamless Pipe

Standard: ASTM B729, ASME SB 729
OD Sizes: 1/2” - 24”
Thickness: SCH5~SCHXXS
Process: Hot/Cold Rolled, Hot work, Cold drawn
Grades：Alloy 20,UNS N08020,2.4660

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Product Introduction

Alloy 20, also known as Carpenter 20, is a nickel-iron-chromium-based austenitic alloy designed for maximum resistance to sulfuric acid. A common form of Alloy 20 is seamless pipe, which has no welds and is more pressure resistant than welded pipe. Our manufacturers strictly follow the ASME SB 729 specification.

Alloy 20 seamless pipe also has excellent resistance to pitting, crevice corrosion and stress corrosion cracking, making it a popular choice in the chemical processing, petrochemical and pharmaceutical industries. We can provide a variety of sizes and thicknesses, contact us for a free quote!

Incoloy 20 UNS N08020 ASTM Standard:

ASTM B729: Specification for Seamless UNS N08020, UNS N08026, and UNS N08024 Nickel-Alloy Pipe and Tube

ASTM B468-10(2020): Standard Specification for Welded UNS N08020 Alloy Tubes

Alloy 20 Pipe Suppliers: price is US $650-1100 / Metric Ton

2.4660 Alloy 20 Seamless Tube Specification

Specification	ASTM B729, ASME SB 729, ASTM B468, ASME SB 468
Standard	GB, EN, DIN, DS, DTD, ASTM, SAE, ASME, AISI, JIS, TOCT, NF, AMS
Alloy 20 Tube Tolerances	+/- 0.030; tolerance may vary depending on grade and thickness
Seamless Tube Size	15 NB to 150 NB IN 1/2" OD - 12" OD
Welded Tube Size	1/2" OD - 12" OD Guage: 25 SWG - 10 SWG
Length	Upto 30 meters, Single Random, Double Random & Required Length End: Plain End, Beveled End, Treaded, or Custom Cut Lengths
WT	0.40 mm - 12.70 mm
Schedule	5, 10S, 10, 30, 40S, 40, 80, 80S, XS, 160, XXH
Swg & Bwg	10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg.
Manufacturing Techniques	EFW, CDW, ERW, LSAW, DOM, Fabricated, Seam-Welded, Seamless, CEW, Redrawn, Welded

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ASTM B729 Alloy 20 Quality Assurance

The ASME SB 729 specification specifies the standards for manufacturing Alloy 20 seamless pipes and ensures that the finished product meets the necessary quality standards. Alloy 20cb3 Carpenter 20 precision pipes are tested for chemical composition, pressure resistance testing, corrosion resistance testing, fatigue testing, mechanical properties hardness, tensile strength, elongation and other parameters. We strictly control the quality of each batch of products.

ASTM B729 UNS N08020 Coil Applications

Chemical Processing
Petrochemical
Pharmaceutical
Heat Exchangers
Pressure Vessels and Valves

Why Choose Us as Your Alloy 20 Pipe Supplier?

Factory direct supply (competitive pricing)
Large stock availability for fast delivery
Custom cutting & fabrication services
Full material traceability (MTC included)
Strict quality inspection (chemical & mechanical testing)
Global export experience

ASME SB 729 UNS N08020 Square Tube Size And Weight

Dimensions	Wall	Weight Per	Dimensions	WAll	Weight Per
(MM)	(MM)	METRE (KG)	(MM)	(MM)	METRE (KG)
12.7 x 12.7	1.2	0.44	40 x40	1.2	1.49
12.7 x 12.7	1.5	0.55	40 x40	1.5	1.85
15 x 15	1.2	0.53	40 x40	2	2.45
15 x 15	1.5	0.65	40 x40	3	3.75
20 x 20	1.2	0.71	50 x50	1.5	2.32
20 x 20	1.5	0.88	50 x50	2	3.08
20 x 20	2	1.19	50 x50	3	4.65
25 x 25	1.2	0.92	60 x60	2	3.71
25 x 25	1.5	1.14	60 x60	3	5.49
25 x 25	2	1.49	70 x70	3	6.53
25 x 25	3	2.2	80 x80	2	4.98
30 x 30	1.2	1.1	80 x80	3	7.53
30 x 30	1.5	1.37	100 x 100	2	6.4
30 x 30	2	1.84	100 x 100	3	9.53
30 x 30	3	2.72	-	-	-

Alloy 20 UNS N08020 Pipe Gauge Thickness

Gauge	Thickness Range (inch)	Typical Value (inch)
22	0.025 - 0.029	0.028
20	0.031 - 0.035	0.035
19	0.038 - 0.042	0.042
18	0.044 - 0.049	0.049
17	0.053 - 0.058	0.058
16	0.060 - 0.065	0.065
15	0.066 - 0.074	0.072
14	0.075 - 0.085	0.083
13	0.087 - 0.097	0.095
12	0.101 - 0.111	0.109
11	0.112 - 0.122	0.12
10	0.126 - 0.136	0.134
9	0.140 - 0.150	0.148
8	0.157 - 0.167	0.165
7	0.175 - 0.185	0.18