Alloy 20 is one of the so-called "Super" stainless steels that was designed for maximum resistance to acid attack. It's nickel, chromium, molybdenum and copper content contribute to its overall resistance to chloride on stress corrosion cracking and general pitting attack. The alloy is stabilized with columbium to minimize carbide precipitation during welding. It has good mechanical properties and can be fabricated with comparative ease. Although the alloy was designed for use in sulfuric acid related industries, it finds wide usage throughout the chemical processing industry. It is also used for processing pharmaceuticals, food, gasoline, solvents, plastics, explosives, synthetic fibers and many other products.

Materials: Typical materials of Carpenter alloy (Alloy 20) wire mesh

Nickel	Chromium	Carbon	Copper	Molybdenum	Manganese	Silicon	Columbium	Iron
32.5-35%	19-21%	0.06% maximum	3-4%	2-3%	2% maximum	1% maximum	1% maximum	31-44% (balance)

Process

Weaving pattern:

1.Plain weave
2.Twill weave

Surface Finishing: NA

Key Properties:

Superior resistance to stress-corrosion cracking in boiling 20 to 40% sulfuric acid.
Excellent general corrosion resistance to sulfuric acid.
Excellent resistance to chloride stress corrosion cracking.
Excellent mechanical properties and fabric ability.
Minimal carbide precipitation during welding.

Typical Applications:

Chemical and allied industries
Food and dye production
Heat exchangers
SO 2 scrubbers and other severe environments
Tanks
Pickling racks
Valves

Specifications

2mesh/inch-500mesh/inch General;
We produce wire cloth in all kinds of forms. The weaving style is determined according to our customers’ specific requirements, such as the material, the wire diameter, the size of the mesh, width and length.
Wire mesh specifications of Carpenter alloy (Alloy 20) Alloy

Mesh		S.W.G	Aperture (mm)	Wire Diameter (mm)	Effective (%)	Weight (Kg/m2)
Inch	CM	S.W.G	Aperture (mm)	Wire Diameter (mm)	Effective (%)	Weight (Kg/m2)
3mesh	1.18	14	6.27	2.2	62	7
3mesh	1.2	18	7.25	1.219	70	2.5
3.5mesh	1.4	20	6.34	0.914	66	1.8
4mesh	1.57	16	4.72	1.63	58	5
4mesh	1.6	20	5.45	0.914	76	2.1
4.5mesh	1.8	22	4.93	0.711	71	1.2
5mesh	1.97	18	3.86	1.22	57	3.6
5mesh	2	22	4.36	0.711	76	1.3
6mesh	2.36	18	3.04	1.22	50	4.3
6mesh	2.36	22	3.52	0.711	63	1.6
8mesh	3.15	20	2.26	0.91	43	3.2
8mesh	3.15	24	2.5	0.559	67	1.5
10mesh	3.94	20	1.63	0.91	41	4
10mesh	3.94	26	2.08	0.46	67	1.1
12mesh	4.72	22	1.41	0.71	43	2.9
12mesh	4.72	26	1.74	0.457	68	1.4
14mesh	5.52	26	1.36	0.46	57	1.4
16mesh	6.3	28	1.21	0.376	55	1.2
18mesh	7.09	30	1.1	0.315	60	0.85
20mesh	7.87	30	0.95	0.315	58	0.95
22mesh	8.66	32	0.88	0.274	57	0.8
24mesh	9.45	32	0.78	0.274	55	0.85
26mesh	10.2	32	0.74	0.274	51	0.7
28mesh	11	34	0.67	0.234	50	0.75
30mesh	11.8	34	0.61	0.234	48	0.8
32mesh	12.6	34	0.56	0.234	50	0.84
36mesh	14.2	34	0.47	0.234	45	0.95
38mesh	15	36	0.48	0.193	46	0.7
40mesh	15.7	36	0.44	0.193	50	0.8
50mesh	19.7	38	0.36	0.152	46	0.58
60mesh	23.6	40	0.3	0.122	50	0.45
80mesh	31.5	40	0.198	0.12	44	0.58
100mesh	39.4	42	0.154	0.1	37	0.5
120mesh	47.2	44	0.13	0.081	40	0.39
130mesh	51.2	45	0.125	0.07	41	0.325
140mesh	55.1	45	0.111	0.07	38	0.35
150mesh	59.1	46.5	0.115	0.055	48	0.206
160mesh	63	46	0.097	0.61	32	0.3
170mesh	66.93	47	0.09	0.05	41	0.213
180mesh	70.9	47	0.09	0.051	410	0.24
190mesh	74.8	47	0.083	0.051	40	0.24
200mesh	78.7	48	0.086	0.041	46	0.17
220mesh	86.6	48	0.074	0.041	41	0.19
240mesh	94.5	48	0.065	0.041	39	0.2
250mesh	98.4	48	0.061	0.041	38	0.22
260mesh	102.4	48	0.057	0.041	34	0.22
280mesh	110.2	49	0.06	0.031	31	0.14
300mesh	118.1	49	0.054	0.031	40	0.15
320mesh	126	49	0.048	0.031	39	0.16
350mesh	137.8	49	0.042	0.031	36	0.16
400mesh	157.5	50	0.0385	0.025	39	0.013
450mesh	177.2	50	0.0314	0.025	37	0.14
500mesh	196.6	50	0.0258	0.025	35	0.156

Anping TaiWah Metal Products Co.,Ltd.
Tel: 0086 318 7757556 7757557 Fax: 0086 318 7757558 Email: sales@basicmesh.com thmesh@hotmail.com
Add: 3rd Floor, Office building, XinYuZhuangYuan,XinYing Street, AnPing County, HeBei Province,China