Expert Corrosion-Resistant Tubing for Chemicals

Chemical Applications

Providing an essential role in hydrocarbon processing applications from fired heaters to steam reformers, used in syngas production, to subsequent refining processes for the production of fertilisers for essential nutrients that feed our plants and crops to pharmaceutical equipment operating under cryogenic conditions.

Fertilizer

Petrochemical

Pharmaceutical

From providing the essential nutrients for the growth of our plants and crops to dermataological skin products to the whitening of our smile the fertilizer industry and associated key processes of UREA and ammonia production are an essential ingredient in today’s lives.

Fertilizer production processes present environments with aggressive corrosion conditions, such as with Ammonium carbamate production at 180 ºC (356 ºF) to 250 ºC (482 ºF) and 150 bar (15 MPa).

With associated processes such as nitric acid, sulphuric acid, phosphoric acid and melamine production more sophisticated solutions to the use of conventional stainless grades such as 304L/316L are required.

From condensers to cooling towers consideration must be given to the differing types of corrosion presented by the potentially aggressive chemical plant corrosive environments.

Austenitic

MST designation	Attribute	Nearest equivalent standard			Typical chemical composition ¹⁾						Density		Min. mechanical prop. at RT
		UNS	EN	JIS	C_max	Cr	Ni	Mo	Cu	others			Rp_0.2 Yield Strength		R_m Tensile Strength
											g/cm³	lb/in³	MPa	ksi	MPa	ksi
DMV 304	Corrosion Resistant	S30400	1.4301	SUS 304	0.06	18.5	9.5				7.9	0.29	205	30	515	75
DMV 304L	Corrosion Resistant	S30403	1.4306	SUS 304L	0.03	19.0	11.0				7.9	0.29	170	25	485	70
DMV 304LN	Corrosion Resistant	S30453	1.4311		0.03	18.0	10.0				7.9	0.29	205	30	515	75
DMV 321	Corrosion Resistant	S32100	1.4541	SUS 321	0.08	18.5	10.5			5 x C < Ti < 0.6	7.9	0.29	170	25	485	70
DMV 347	Corrosion Resistant	S34700	1.4550	SUS 347	0.08	18.5	11.0			10 x C < Nb < 1.0	7.9	0.29	205	30	515	75
DMV 316	Corrosion Resistant	S31600	1.4401	SUS 316	0.06	17.0	11.5	2.25			8.0	0.29	205	30	515	75
DMV 316L	Corrosion Resistant	S31603	1.4404		0.03	17.0	12.0	2.25			8.0	0.29	170	25	485	70
DMV 316LMoS	Corrosion Resistant	S31603	1.4435	SUS 316L	0.03	17.0	12.5	2.75			8.0	0.29	170	25	485	70
DMV 316LN	Corrosion Resistant	S31653	1.4429		0.03	17.0	12.5	2.75		0.12 < N < 0.22	8.0	0.29	205	30	515	75
DMV 316Ti	Corrosion Resistant	S31635	1.4571		0.08	17.0	11.5	2.25			8.0	0.29	205	30	515	75
DMV 316LVM	Corrosion Resistant	S31673	1.4441		0.025	17.5	14.0	2.8	<0.10	N<0.10	8.0	0.29	190	28	490	71
DMV 317L	Corrosion Resistant	S31703	1.4438	SUS 317L	0.03	18.0	14.5	3.5			8.0	0.29	205	30	515	75
DMV 316LUG	Corrosion Resistant	S31603	1.4435		0.02	17.0	13.5	4.5			8.0	0.29	170	25	485	70
DMV 309	Corrosion Resistant	S30900	1.4828	SUS 309 TB	0.07	25.0	14.0				7.9	0.29	205	30	515	75
DMV 306Si	Corrosion Resistant	S30600	1.4361		0.015	18.0	15.0			Si 4	7.9	0.29	240	35	540	78
DMV 4439	Corrosion Resistant	(S31726)	1.4439		0.03	17.5	13.5	4.5		N 0.16	8.0	0.29	240	35	550	80
DMV 4335	Corrosion Resistant	S31002	1.4335		0.015	25.0	20.5			N<0.10	7.9	0.29	255	37	540	78
DMV 25.22.2	Corrosion Resistant	S31050	1.4466		0.02	25.0	22.0	2.0		N 0.12	7.9	0.29	255	37	540	78
DMV 310S	Corrosion Resistant	S31008	1.4845		0.015	25.0	21.0				7.9	0.29	205	30	515	75
DMV 904	Corrosion Resistant	N08904	1.4539		0.02	20.5	25.5	4.5	1.5		8.0	0.29	215	31	490	71
DMV 926	Corrosion Resistant	N08926	1.4529		0.02	20.0	25.0	6.5	0.8	N 0.20	8.0	0.29	295	43	650	94
DMV 954	Corrosion Resistant	S31254	1.4547		0.02	20.0	18.0	6.2		N 0.20	8.0	0.29	310	45	655	95
DMV 304H	Heat Resistant	S30409	1.4948		0.08 ²⁾	18.5	9.5				7.9	0.29	205	30	515	75
DMV 304HCu	Heat Resistant		1.4907		0.13 ²⁾	18.5	9.5		3.0	N 0.10; Nb 0.5	7.9	0.29	235	34	590	85
DMV 321H	Heat Resistant	S32109	1.4940		0.08 ²⁾	18.5	11.0			Ti > 4 x C < 0.6	7.9	0.29	170	25	480	70
DMV 347H	Heat Resistant	S34709	1.4912		0.08 ²⁾	18.5	11.0			Nb > 8 x C < 1.0	7.9	0.29	205	30	515	75
DMV 347HFG	Heat Resistant		1.4908		0.10 ²⁾	18.5	11.0			Ti+Nb > 8xC < 1.0	7.9	0.29	205	30	550	80
DMV 310H	Heat Resistant	S31009	1.4845	SUS 310 TB	0.10 ²⁾	25.0	20.0				8.0	0.29	205	30	515	75
DMV 310N	Heat Resistant	S31042	1.4952		0.10 ²⁾	25.0	20.0			N 0.20; Nb 0.40	8.0	0.29	295	43	655	95
DMV 4841	Heat Resistant		1.4841		0.10	25.0	20.5			Si 2.0	8.0	0.29	205	30	515	75

¹⁾ All figures in weight percentage. In case of order, the limits of the order specification will apply.
²⁾ Minimum level of carbon content is mandatory.

Austenitic Ferritic

MST designation	Nearest equivalent standard		Typical chemical composition ¹⁾						Density		Min. mechanical prop. at RT
	UNS	EN	C_max	Cr	Ni	Mo	Cu	others			Rp_0.2 Yield Strength		R_m Tensile Strength
									g/cm³	lb/in³	MPa	ksi	MPa	ksi
DMV 22.5	S31803	1.4462	0.03	22.0	5.5	3.0		N 0.17 ²⁾	7.8	0.28	450	65	620	90
DMV 25.7N	S32760	1.4501	0.03	25.0	7.0	4.0	0.5	N 0.25; W 0.5 ²⁾	7.8	0.28	550	80	750	109
DMV 29.7	S32906	1.4477	0.03	29.0	7.0	2.3	< 0.80	N 0.35 ²⁾	7.8	0.28	650	94	800	116

¹⁾ All figures in weight percentage. In case of order, the limits of the order specification will apply.
²⁾ Min PRE value controlled.

Nickel and Nickel Based Alloys

MST designation	Attribute	Nearest equivalent standard		Typical chemical composition ¹⁾						Density		Min. mechanical prop. at RT
		UNS	EN	C_max	Cr	Ni	Mo	Cu	others			Rp_0.2 Yield Strength		R_m Tensile Strength
										g/cm³	lb/in³	MPa	ksi	MPa	ksi
DMV 200	Pure Nickel	N02200	2.4066	0.05		99.4				8.9	0.32	103	15	379	55
DMV 201	Pure Nickel	N02201	2.4068	0.02		99.4				8.9	0.32	83	12	345	50
DMV 400	Nickel-Copper	N04400	2.4360	0.15		65.0		30.0	Fe 2; Mn 1.5	8.8	0.32	180	26	450	65
DMV 8020	Corrosion Resistant	N08020	2.4660	0.02	20.0	34.0	2.5	3.5	Nb + Ta	8.1	0.29	240	35	550	80
DMV 928	Corrosion Resistant	N08028	1.4563	0.02	27.0	31.0	3.5	1.2	N 0.10	8.0	0.29	210	31	500	73
DMV 931	Corrosion Resistant	N08031	1.4562	0.015	27.0	31.0	6.5	1.2	N 0.20	8.1	0.29	280	41	650	94
DMV 4692	Corrosion Resistant	N08034	2.4692	0.01	27.0	35.0	6.5	1.5	N 0.20	8.1	0.29	310	45	750	108
DMV 800L	Corrosion Resistant	(N08800)	1.4558	0.025	21.0	32.0			Ti 0.30; Al 0.30	8.0	0.29	180	26	450	65
DMV 800	Corrosion Resistant	N08800	1.4876	0.08	21.0	32.0			Ti < 0.40	8.0	0.29	210	31	500	73
DMV 825	Corrosion Resistant	N08825	2.4858	0.03	22.0	42.0	3.0	2.0	Ti 0.80; Al 0.10	8.1	0.29	180	26	530	75
DMV 600L	Corrosion Resistant	N06600	2.4817	0.025	16.0	76.0			Fe 8	8.4	0.30	180	26	550	80
DMV 690	Corrosion Resistant	N06690	2.4642	0.02	29.0	60.0			Fe 9	8.2	0.29	205	30	585	85
DMV 625	Corrosion Resistant	N06625 Gr.1	2.4856	0.025	22.0	63.0	9.0		Nb 3.5	8.5	0.31	414	60	827	120
DMV G3	Corrosion Resistant	N06985	2.4619	0.015	22.0	48.0	7.0	2.0	Co;W	8.3	0.30	205	30	585	85
DMV C22	Corrosion Resistant	N06022	2.4602	0.01	22.0	57.0	13.0		W	8.7	0.31	310	45	690	100
DMV 59	Corrosion Resistant	N06059	2.4605	0.01	23.0	59.0	16.0		Al	8.6	0.31	340	50	690	100
DMV C4	Corrosion Resistant	N06455	2.4610	0.01	16.0	66.0	16.0		Ti	8.6	0.31	280	41	700	102
DMV C276	Corrosion Resistant	N10276	2.4819	0.01	16.0	57.0	16.0		W	8.4	0.30	350	51	750	109
DMV 800H	Heat Resistant	N08810	1.4958	0.10 ²⁾	21.0	32.0			(Al.Ti) 0.15 - 0.60	8.0	0.29	170	25	500	73
DMV 811	Heat Resistant	N08811	1.4959	0.10 ²⁾	21.0	32.0			0.85 < Ti + Al < 1.20	8.0	0.29	170	25	500	73
DMV AC66	Heat Resistant	S33224	1.4877	0.06	27.0	32.0			Ce 0.07; Nb 0.8	8.0	0.29	185	27	500	73
DMV 600H	Heat Resistant	N06600	2.4816	0.07	16.0	76.0			Fe 8	8.4	0.30	240	35	550	80
DMV 625	Heat Resistant	N06625 Gr.2	2.4856	0.025	22.0	63.0	9.0		Nb 3.5	8.4	0.30	276	40	690	100
DMV 601	Heat Resistant	N06601	2.4851	0.08	23.0	62.0			Al 1.2; Ti 0.3	8.1	0.29	240	35	600	87
DMV 617	Heat Resistant	N06617	2.4663	0.08	22.0	55.0	9.0		Co 12; Al; Ti	8.4	0.30	300	44	700	102
DMV C263	Heat Resistant	N07263	2.4650	0.08	20.0	52.0	5.8		Co 20;Ti 2.1,Al 0.5;Mn <0.6	8.4	0.3	585	118	1004	145
DMV 718	Corrosion Resistant	N07718	2.4668	0.08	19.0	52.5	3.0		Nb 5.1;Mn 0.35;Ti 0.8;Al 0.5	8.2	0.29	1035	150	1276	185

¹⁾ All figures in weight percentage. In case of order, the limits of the order specification will apply.
²⁾ Minimum level of carbon content is mandatory.

Serving Applications Such As:

Urea strippers

Carbamate condensers

Tubes: U bent or straight tubes up to 43 m (110 ft) long.

Bimetallic Tubes

Bimetallic tubes were developed as a solution to service some of the most aggressive environments associated with Urea strippers.

Consisting of an external tube of DMV 25.22.2 and internal tube lining of Zirconium grade 702 we innovated our process technology to ensure the integral bonding during the cold working process.

Bimetallic pipes and process pipework in typical dimensions up to 31 mm (1.22”) OD.

cp@mst.mannesmann.com