DIN 17121 Grade ST52.3 Seamless Tubing

ST52.3 NBK Carbon Steel Tube supplier

A low alloy steel, grade ST52.3 is known to be a high strength material. One of the advantages of using the ST52.3 Tubing is that it is easily welded to other steel grades. Another benefit is its strength properties. The tensile strength for pipes belonging to specification DIN 17121 Grade St52-3 ranges between 490 Mpa to 630 Mpa. Whereas their yield strength is valued at 355 MPa. This low alloyed carbon and manganese containing Dom Welded Din 2393 ST52-3 BK tube is predominantly used in the Fluid Power Industry. The absence of several alloying elements reduces the cost of producing these tubes. The alloy for ST52-3 NBK Tube is known to have extraordinary impact energies. Categorised as a non-alloy, the grade ST52.3 is intended for use at elevated temperature. Apart from techniques such as stress-relieving heat treatment or normalizing, the use of any form of heat treatment is not recommended on the DIN 17100 ST52.3.

Standard  DIN 2393 covers precision welded tubes produced from alloys like ST 52.3 BKS. this high precision tube is well suited for several applications like  Auto and motorcycle shock absorber, Electric industry, Construction machinery, Gas spring, Hydraulic system steel tube,  Heat exchanger as well as for Condenser. These industries prefer the use of DIN 2393 Grade St 52-3 tubes as they have the need for a dimensionally accurate product. In some instances, the St 52.3 DIN 2393 ISO H9 is also used where smaller wall thickness or a reliable surface condition is a mandate.

DIN 2393 ISO H9 ST52.3 hydraulic cylinder tube in custom length

Table of Content

• ST52.3 Steel Tubes Specification List

• Basic types of DIN 17121 Grade St52-3

• ST 52.3 BKS Equivalent material grade

• Chemical Material Composition of DIN 17100 ST52.3

• Carbon Steel ST52.3 Grade Seamless Pipe Mechanical Strength

• Dom Welded Din 2393 ST52-3 BK Dimensions Chart

• Wall Thickness Tolerances of DIN 2393 Grade St 52-3

• Tolerances of St 52.3 DIN 2393 ISO H9

ST52.3 Steel Tubes Specification List

Product Type	EN-10025-2 Grade ST52-3 square Tube
Specification	OD15*15mm-400*400mm
OD	30*30 – 600*600 mm
Wall Thickness	0.5 – 20 mm
Standard	API, ASTM, BS, DIN, GB, JIS
Steel material	Q195. Q215, Q235, Q345
Size length	15mm-400mm, WT: 0.313mm
Surface Treatment	Bared, Black Painted (varnish coating), Galvanized, With Oiled, 3 PE, FBE, corrosion resistant coating
Section Shape	Square and rectangular

Basic types of DIN 17121 Grade St52-3

Check Din 2393 ST52.3 Carbon Steel Seamless Pipe price list ex Mumbai

DIN2391 St52.3 Cold drawn Seamless Steel pipe and tube

DIN2391 ST52.3 hydraulic cylinder honed tube

Seamless carbon steel tube st52.3 tube oil and gas tube

St52.3 Seamless Pipe Oil Pipe GI Carbon Steel

DIN2393 St52.3 1.0570 18mm Cold Rolled Welded Steel Pipe

Cold drawn Seamless Steel Pipe And Tube DIN2391 St52.3

ST 52.3 BKS Equivalent material grade

Low alloy and high strength structural steel Dom Welded Din 2393 ST52-3 BK Tube in many sizes

USA	Germany DIN,WNr	Italy UNI	France AFNOR	England BS	Sweden SS	Poland PN	Russia GOST	Austria ONORM
Gr.65	1.0060 E355 St52 St52-3	E335 Fe510	E335 ES355 TS-47a TU526	CEW5 CFS5 E335 ERW5NKM ERW5NZF	1650	MSt6	St6sp	St60F

Chemical Material Composition of DIN 17100 ST52.3

C	Si	Mn	P	S	N	Cu	CEV
max 0.24	max 0.55	max 1.6	max 0.04	max 0.04	max 0.012	max 0.55	max 0.47

Carbon Steel ST52.3 Grade Seamless Pipe Mechanical Strength

DIN 17100 Grade ST 52.3 BKS & EN 10210-1 Grade St 52-3 Steel material in ready stock

Minimum yield strength Reh MPa

Tensile strength Rm MPa

Minimum elongation – A Lo = 5,65 * √So (%)

Notch impact test

Steel grade

Nominal thickness mm

Nominal thickness mm

Nominal thickness mm

Temperature

Min. absorbed energy

≤16

>16 ≤40

>40 ≤63

>63 ≤80

>80 ≤100

>100 ≤125

>3 ≤100

>100 ≤125

>3 ≤40

>40 ≤63

>63 ≤100

>100 ≤125

°C

J

ST52-3

355

345

335

325

315

295

470-630

450-600

22

21

20

18

-20

27

Dom Welded Din 2393 ST52-3 BK Dimensions Chart

OD Size Range	Wall Percent of OD	OD, Inches		ID, Inches
		Over	Under	Over	Under
Up to 0.499	All	0.004	0.000	—	—
0.500-1.699	All	0.005	0.000	0.000	0.005
1.700-2.099	All	0.006	0.000	0.000	0.006
2.100-2.499	All	0.007	0.000	0.000	0.007
2.500-2.899	All	0.008	0.000	0.000	0.008
2.900-3.299	All	0.009	0.000	0.000	0.009
3.300-3.699	All	0.010	0.000	0.000	0.010
3.700-4.099	All	0.011	0.000	0.000	0.011
4.100-4.499	All	0.012	0.000	0.000	0.012
4.500-4.899	All	0.013	0.000	0.000	0.013
4.900-5.299	All	0.014	0.000	0.000	0.014
5.300-5.549	All	0.015	0.000	0.000	0.015
5.500-5.999	Under 6 6 and Over	0.010	0.010	0.010	0.010
		0.009	0.009	0.009	0.009
6.000-6.499	Under 6 6 and Over	0.013	0.013	0.013	0.013
		0.010	0.010	0.010	0.010
6.500-6.999	Under 6 6 and Over	0.015	0.015	0.015	0.015
		0.012	0.012	0.012	0.012
7.000-7.499	Under 6 6 and Over	0.018	0.018	0.018	0.018
		0.013	0.013	0.013	0.013
7.500-7.999	Under 6 6 and Over	0.020	0.020	0.020	0.020
		0.015	0.015	0.015	0.015
8.000-8.499	Under 6 6 and Over	0.023	0.023	0.023	0.023
		0.016	0.016	0.016	0.016
8.500-8.999	Under 6 6 and Over	0.025	0.025	0.025	0.025
		0.017	0.017	0.017	0.017
9.000-9.499	Under 6 6 and Over	0.028	0.028	0.028	0.028
		0.019	0.019	0.019	0.019
9.500-9.999	Under 6 6 and Over	0.030	0.030	0.030	0.030
		0.020	0.020	0.020	0.020
10.000-10.999	All	0.034	0.034	0.034	0.034
11.000-11.999	All	0.035	0.035	0.035	0.035
12.000-12.999	All	0.036	0.036	0.036	0.036
13.000-13.999	All	0.037	0.037	0.037	0.037
14.000-14.999	All	0.038	0.038	0.038	0.038

Wall Thickness Tolerances of DIN 2393 Grade St 52-3

Wall Thickness		Outside Diameter, In.a
		3/8 to 7/8 incl.		Over 7/8 to 1-7/8 incl.		Over 1-7/8 to 3-3/4 incl.		Over 3-3/4 to 15 incl.
In.a	Bwgb	Wall Thickness Tolerances, in.,a ±
		+	–	+	–	+	–	+	–
0.035	20	0.002	0.002	0.002	0.002	0.002	0.002	…	…
0.049	18	0.002	0.002	0.002	0.003	0.002	0.003	…	…
0.065	16	0.002	0.002	0.002	0.003	0.002	0.003	0.004	0.004
0.083	14	0.002	0.002	0.002	0.003	0.003	0.003	0.004	0.005
0.095	13	0.002	0.002	0.002	0.003	0.003	0.003	0.004	0.005
0.109	12	0.002	0.003	0.002	0.004	0.003	0.003	0.005	0.005
0.120	11	0.003	0.003	0.002	0.004	0.003	0.003	0.005	0.005
0.134	10	…	…	0.002	0.004	0.003	0.003	0.005	0.005
0.148	9	…	…	0.002	0.004	0.003	0.003	0.005	0.005
0.165	8	…	…	0.003	0.004	0.003	0.004	0.005	0.006
0.180	7	…	…	0.004	0.004	0.003	0.005	0.006	0.006
0.203	6	…	…	0.004	0.005	0.004	0.005	0.006	0.007
0.220	5	…	…	0.004	0.006	0.004	0.006	0.007	0.007
0.238	4	…	…	0.005	0.006	0.005	0.006	0.007	0.007
0.259	3	…	…	0.005	0.006	0.005	0.006	0.007	0.007
0.284	2	…	…	0.005	0.006	0.005	0.006	0.007	0.007
0.300	1	…	…	0.006	0.006	0.006	0.006	0.008	0.008
0.320		…	…	0.007	0.007	0.007	0.007	0.008	0.008
0.344		…	…	0.008	0.008	0.008	0.008	0.009	0.009
0.375		…	…	…	…	0.009	0.009	0.009	0.009
0.400		…	…	…	…	0.010	0.010	0.010	0.010
0.438		…	…	…	…	0.011	0.011	0.011	0.011
0.460		…	…	…	…	0.012	0.012	0.012	0.012
0.480		…	…	…	…	0.012	0.012	0.012	0.012
0.531		…	…	…	…	0.013	0.013	0.013	0.013
0.563		…	…	…	…	0.013	0.013	0.013	0.013
0.580		…	…	…	…	0.014	0.014	0.014	0.014
0.600		…	…	…	…	0.015	0.015	0.015	0.015
0.625		…	…	…	…	0.016	0.016	0.016	0.016
0.650		…	…	…	…	0.017	0.017	0.017	0.017

Tolerances of St 52.3 DIN 2393 ISO H96

Outside Diameter Inches (mm)	Additional Ovality Tolerance Inches (mm)
Up to 2 (50.8), incl.	0.010 (0.25)
Over 2 to 3 (50.8 to 76.2), incl.	0.015 (0.38)
Over 3 to 4 (76.2 to 101.6), incl.	0.020 (0.51)
Over 4 to 5 (101.6 to 127.0), incl.	0.025 (0.64)
Over 5 to 6 (127.0 to 152.4), incl.	0.030 (0.76)
Over 6 to 7 (152.4 to 177.8), incl.	0.035 (0.89)
Over 7 to 8 (177.8 to 203.2), incl.	0.040 (1.02)
Over 8 to 9 (203.2 to 228.6), incl.	0.045 (1.14)
Over 9 to 10 (228.6 to 254.0), incl.	0.050 (1.27)
Over 10 to 11 (254.0 to 279.4), incl.	0.055 (1.40)
Over 11 to 12 (279.4 to 304.8), incl.	0.060 (1.52)
Over 12 to 12.500 (304.8 to 317.5), incl.	0.065 (1.65)