Refinery: High-Quality Furnace & Heat Exchanger Tubing

Application Furnace & Fired Heater

From the most challenging corrosive environments to the extremes of high temperature industrial processes we offer a solution across applications from fired heaters, heat exchanger tubing, process piping and instrumentation tubing.

Product: Furnace & Fired Heater

Austenitic Stainless

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 304H	Heat Resistant	S30409	1.4948		0.08²⁾	18.5	9.5				7.9	0.29	205	30	515	75
DMV 304HCu	Heat Resistant		1.4907		0.13²⁾	18.5	9.5		3.0	N 0.10;Nb 0.5	7.9	0.29	235	34	590	85
DMV 4910	Heat Resistant	S31653	1.4910		0.04	17.0	13.0	2.4			7.9	0.29	260	37	590	85
DMV 321H	Heat Resistant	S32109	1.4940		0.08²⁾	18.5	11.0			Ti>4xC< 0.6	7.9	0.29	170	25	480	70
DMV 347H	Heat Resistant	S34709	1.4912		0.08²⁾	18.5	11.0			Nb>8xC<1.0	7.9	0.29	205	30	515	75
DMV 347HFG	Heat Resistant		1.4908		0.10²⁾	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	0.10²⁾	25.0	20.0				8.0	0.29	205	30	515	75
DMV 310N	Heat Resistant	S31042	1.4952		0.10²⁾	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.

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	others			Rp_0.2 Yield Strength		R_m Tensile Strength
									g/cm³	lb/in³	MPa	ksi	MPa	ksi
DMV 800H	Heat Resistant	N08810	1.4958	0.10²⁾	21.0	32.0		(Al.Ti) 0.15-0.60	8.0	0.29	170	25	500	73
DMV 811	Heat Resistant	N08811	1.4958	0.10²⁾	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

Product: Heat Exchanger Tubes

Austenitic Stainless

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			5xC< 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			10xC< 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 316Ti	Corrosion Resistant	S31635	1.4571		0.08	17.0	11.5	2.25			8.0	0.29	205	30	515	75
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 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 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

¹⁾ All figures in weight percentage. In case of order, the limits of the order specification will apply.

Application Heat Exchanger

Our heat exchanger tubes are manufactured in straight lengths or U tube form. Working in close partnership with fabricators and designers ensures we meet your individual requirements.

PRODUCT: U-BENT TUBES (up to 43 m / 141 ft long)
OD range	mm	Inch
min	12.7	0.5
max	38.1	1.5

WT range	mm	Inch
min	0.89	0.035
max	4.5	0.177

PRODUCT: STRAIGHT TUBES
OD range	mm	Inch
min	9.5	0.374
max	50.8	2.0

WT range	mm	Inch
min	0.89	0.035
max	4.5	0.177

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/cm	lb/in	MPa	ksi	MPa	ksi
DMV 18.5	S31500	1.4424	0.03	18.5	4.8	2.7		Si 1.7; N 0.1	7.8	0.28	440	64	630	92
DMV 22.5	S31803	1.4462	0.03	22.0	5.5	3.0		N 0.17²⁾	7.8	0.28	450	65	620	90
DMV 25.7	S31260		0.03	25.0	6.5	3.0	0.5	N 0.20; W 0.5	7.8	0.28	450	65	690	100
DMV 25.7Cu	S32550	1.4507	0.03	25.0	7.0	3.5	1.5	N 0.22²⁾	7.8	0.28	550	80	760	110
DMV 25.7N	S32760	1.4501	0.03	25.0	7.0	4.0	0.5	N 0.25; W 0.5²⁾	7.8	0.28	550	80	750	109
DMV 25.7NS	S32750	1.4410	0.03	25.5	7.0	4.0	0.25	N 0.3²⁾	7.8	0.28	550	80	750	109

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

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 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 C276	Corrosion Resistant	N10276	2.4819	0.01	16.0	57.0	16.0		W	8.4	0.30	350	51	750	109
DMV 400	Corrosion resistant	N04400	2.4360	0.15		65.0		30.0	Fe 2;Mn 1.5	8.8	0.32	180	26	450	65
DMV 200	Corrosion resistant	N02200	2.4066	0.05		99.4				8.9	0.32	103	15	379	55
DMV 201	Corrosion resistant	N02201	2.4068	0.02		99.4				8.9	0.32	83	12	345	50

¹⁾ All figures in weight percentage. In case of order, the limits of the order specification will apply.