Properties

These high strength steels are characterised by their low content of both carbon and micro-alloying elements. This gives HSLA steels outstanding functional properties, such as weldability and coatability. The hardening achieved by controlled internal purity and fine grain size structure ensures excellent mechanical strength. The grades available are in compliance with EN 10268:2006+A1:2013 and are obtained after either batch or continuous annealing.

Advantages

They combine improved weldability with good formability. The narrow variation margins for their mechanical properties make it easy to shape the steel (presses or automated lines). They also have good fatigue and impact resistance.

Applications

They are particularly suitable for structural parts that do not require severe forming (profiling, bending or light drawing): automotive structures and reinforcements, industrial shelving systems, furniture, mechanical engineering applications etc.

Formability

The deep drawing performance of the HC260LA AM FCE grade is equivalent to that of mild steel. Drawability decreases as the yield strength increases.

 

Forming limit curves can be used to define the maximum strains not to be exceeded when forming steel by various methods, so as to avoid the risk of incipient necking. These curves are available on request.

 

Please contact us for other forming data on HSLA products for particular sheet thicknesses.

Weldability

HSLA AM FCE steel grades have good weldability in all welding processes.

Based on many years’ practical experience in arc and resistance spot welding of its products, ArcelorMittal can provide valuable technical assistance in defining the welding parameters for all products in the HSLA range.

Fatigue resistance

Fatigue resistance is generally expressed as an endurance limit, corresponding to the maximum stress resisted for a given number of cycles before failure. The table below gives some examples of 5 million cycle endurance limits under fluctuating tension with a stress ratio Rs = 0.1.

 Thickness5 million cycle endurance limit (MPa)
HC300LA AM FCE1 mm362
HC380LA AM FCE0.8 mm403

A complete database of fatigue resistance data on this range of common steels is available on request.

Brand correspondence

 EN 10268:2006+A1:2013EN 10268:1998ASTM 607:1993Old brand names
HC260LA EN 10268 HC260LAH240LA  
HC260LA AM FCE HC260LAH240LA Profilar 260
HC300LA EN 10268 HC300LAH280LA  
HC300LA AM FCE HC300LAH280LA Profilar 300/Sidca M-300/Soldur 280
HC340LA EN 10268 HC340LAH320LA  
HC340LA AM FCE HC340LAH320LAGrade 607-45Profilar 340/Sidca M-340/Soldur 320
HC380LA EN 10268 HC380LAH360LA  
HC380LA AM FCE HC380LAH360LAGrade 607-50Profilar 380/Soldur 360
HC420LA EN 10268 HC420LAH400LA  
HC420LA AM FCE HC420LAH400LAGrade 607-55Profilar 420
HC460LA EN 10268 HC460LA   
HC460LA AM FCE HC460LA   
HC500LA EN 10268 HC500LA   
HC500LA AM FCE HC500LA   

Dimensions

Thickness (mm)HC260LA EN 10268, HC260LA AM FCEHC300LA EN 10268, HC300LA AM FCEHC340LA EN 10268, HC340LA AM FCEHC380LA EN 10268, HC380LA AM FCEHC420LA EN 10268, HC420LA AM FCEHC460LA EN 10268, HC460LA AM FCEHC500LA EN 10268, HC500LA AM FCE
Min widthMax widthMin widthMax widthMin widthMax widthMin widthMax widthMin widthMax widthMin widthMax widthMin widthMax width
0.30 ≤ th < 0.40600120060012006001210800-800-800-800-
0.40 ≤ th < 0.501360136013801030
0.50 ≤ th < 0.60154015401540127010101150
0.60 ≤ th < 0.70170016201620600134011101270
0.70 ≤ th < 0.80181016701670144060012201340
0.80 ≤ th < 0.90186017201570129014001350
0.90 ≤ th < 1.00182018201650135014501400
1.00 ≤ th < 1.10140015001450
1.10 ≤ th < 1.20146015401500
1.20 ≤ th < 1.301840151015901550
1.30 ≤ th < 1.40156016301590
1.40 ≤ th < 1.501700161016801650
1.50 ≤ th < 1.60180017501670
1.60 ≤ th < 1.70180016101650
1.70 ≤ th < 1.801890158014801340
1.80 ≤ th < 1.90-
1.90 ≤ th < 2.00195015601400
2.00 ≤ th < 2.10198018901540-
2.10 ≤ th < 2.301940185017901510
2.30 ≤ th < 2.401900184017701500
2.40 ≤ th < 2.5017301480
2.50 ≤ th < 2.6016901470
2.60 ≤ th < 2.70187016501450
2.70 ≤ th < 2.80178016101410
2.80 ≤ th < 2.901860174016001370
2.90 ≤ th < 3.00180017001330
3.00 ≤ th < 3.101760166014901290

Mechanical properties

 
Direction
Thickness (mm)
Re (MPa)
Rm (MPa)
A80 (%)
Bending ratio (th)
HC260LA EN 10268L0.5 - 0.7240 - 310340 - 420≥ 25-
0.7 - 3≥ 27
T0.5 - 0.7260 - 330350 - 430≥ 24-
0.7 - 3≥ 26
HC260LA AM FCEL0.5 - 0.7240 - 310340 - 420≥ 25-
0.7 - 3≥ 27
T0.5 - 0.7260 - 330350 - 430≥ 24≥ 0
0.7 - 3≥ 26
HC300LA EN 10268L0.5 - 0.7280 - 360370 - 470≥ 22-
0.7 - 3≥ 24
T0.5 - 0.7300 - 380380 - 480≥ 21-
0.7 - 3≥ 23
HC300LA AM FCEL0.5 - 0.7280 - 360370 - 470≥ 22-
0.7 - 3≥ 24
T0.5 - 0.7300 - 380380 - 480≥ 21≥ 0
0.7 - 3≥ 23
HC340LA EN 10268L0.5 - 0.7320 - 410400 - 500≥ 20-
0.7 - 3≥ 22
T0.5 - 0.7340 - 420410 - 510≥ 19-
0.7 - 3≥ 21
HC340LA AM FCEL0.5 - 0.7320 - 410400 - 500≥ 20-
0.7 - 3≥ 22
T0.5 - 0.7340 - 420410 - 510≥ 19≥ 0
0.7 - 3≥ 21
HC380LA EN 10268L0.5 - 0.7350 - 450430 - 550≥ 18-
0.7 - 3≥ 20
T0.5 - 0.7380 - 480440 - 580≥ 17-
0.7 - 3≥ 19
HC380LA AM FCEL0.5 - 0.7360 - 450450 - 550≥ 18-
0.7 - 3≥ 20
T0.5 - 0.7380 - 480460 - 560≥ 17≥ 0.5
0.7 - 3≥ 19
HC420LA EN 10268L0.5 - 0.7390 - 500460 - 580≥ 16-
0.7 - 3≥ 18
T0.5 - 0.7420 - 520470 - 600≥ 15-
0.7 - 3≥ 17
HC420LA AM FCEL0.5 - 0.7400 - 500470 - 580≥ 16-
0.7 - 3≥ 18
T0.5 - 0.7420 - 520480 - 590≥ 15≥ 0.5
0.7 - 3≥ 17
HC460LA EN 10268T0.5 - 0.7460 - 580510 - 660≥ 11-
0.7 - 2≥ 13
HC460LA AM FCET0.5 - 0.7460 - 560550 - 650≥ 13-
0.7 - 2≥ 15
HC500LA EN 10268T0.5 - 0.7500 - 620550 - 710≥ 10-
0.7 - 2≥ 12
HC500LA AM FCET0.5 - 0.7500 - 620570 - 710≥ 12≥ 0.5
0.7 - 2≥ 14
Values in bold: tighter than the standard

The choice of direction for the mechanical properties should be specified when ordering.



Chemical composition

 
C (%)
Mn (%)
P (%)
S (%)
Si (%)
Al (%)
Nb (%)
Ti (%)
Galvanisation
HC260LA EN 10268 ≤ 0.10 ≤ 1.0 ≤ 0.030 ≤ 0.025 ≤ 0.5 ≥ 0.015 ≤ 0.09 ≤ 0.15 -
HC260LA AM FCE 0.080 0.60 0.025 0.020 0.03 ≥ 0.015 ≤ 0.090 ≤ 0.150 Class 1
HC300LA EN 10268 ≤ 0.12 ≤ 1.4 ≤ 0.030 ≤ 0.025 ≤ 0.5 ≥ 0.015 ≤ 0.09 ≤ 0.15 -
HC300LA AM FCE 0.090 0.70 0.025 0.020 0.03 ≥ 0.015 ≤ 0.090 ≤ 0.150 Class 1
HC340LA EN 10268 ≤ 0.12 ≤ 1.5 ≤ 0.030 ≤ 0.025 ≤ 0.5 ≥ 0.015 ≤ 0.09 ≤ 0.15 -
HC340LA AM FCE ≤ 0.100 0.90 0.025 0.020 0.03 ≥ 0.015 ≤ 0.090 ≤ 0.150 Class 1
HC380LA EN 10268 ≤ 0.12 ≤ 1.6 ≤ 0.030 ≤ 0.025 ≤ 0.5 ≥ 0.015 ≤ 0.09 ≤ 0.15 -
HC380LA AM FCE ≤ 0.100 1.00 0.025 0.020 0.35 ≥ 0.015 ≤ 0.090 ≤ 0.150 No
HC420LA EN 10268 ≤ 0.14 ≤ 1.6 ≤ 0.030 ≤ 0.025 ≤ 0.5 ≥ 0.015 ≤ 0.09 ≤ 0.15 -
HC420LA AM FCE ≤ 0.100 1.20 0.025 0.020 0.15 ≥ 0.015 ≤ 0.090 ≤ 0.150 No
HC460LA EN 10268 ≤ 0.14 ≤ 1.8 ≤ 0.030 ≤ 0.025 ≤ 0.6 ≥ 0.015 ≤ 0.09 ≤ 0.15 -
HC460LA AM FCE 0.100 1.60 0.025 0.020 0.15 ≥ 0.015 ≤ 0.090 ≤ 0.150 No
HC500LA EN 10268 ≤ 0.14 ≤ 1.8 ≤ 0.030 ≤ 0.025 ≤ 0.6 ≥ 0.015 ≤ 0.09 ≤ 0.15 -
HC500LA AM FCE 0.100 1.60 0.025 0.020 0.15 ≥ 0.015 ≤ 0.090 ≤ 0.150 No
Values in bold: tighter than the standard

V+Nb+Ti ≤ 0.22%



For commercial information (quotations, deliveries, product availability):

For technical questions about these products: flateurope.technical.assistance@arcelormittal.com


All details provided in the ArcelorMittal Flat Carbon Europe S.A. catalogue are for information purposes only. ArcelorMittal Flat Carbon Europe S.A. reserves the right to change its product range at any time without prior notice.