EN 10149-2

Description

EN 10149-2 High-strength low-alloy steel for cold forming

EN 10149-2 is a European standard that specifies high-strength, low-alloy steel grades for cold-forming applications. These steels are thermomechanically rolled and offer excellent weldability, toughness, and formability.

Grades in EN 10149-2

• S315MC – Minimum yield strength of 315 MPa
• S355MC – Minimum yield strength of 355 MPa
• S420MC – Minimum yield strength of 420 MPa
• S460MC – Minimum yield strength of 460 MPa
• S500MC – Minimum yield strength of 500 MPa
• S550MC – Minimum yield strength of 550 MPa
• S600MC – Minimum yield strength of 600 MPa
• S650MC – Minimum yield strength of 650 MPa
• S700MC – Minimum yield strength of 700 MPa

EN 10149-2 Dimensions

Thickness

• EN 10149-2 S460MC: 2–10 mm thick
• EN 10149-2 S500MC: 2–13 mm thick
• EN 10149-2 S355MC: 1.5–20 mm thick
• EN 10149-2 S500MC steel plates: 2–10 mm thick

Width

• EN 10149-2 S460MC: Up to 1600 mm wide
• EN 10149-2 S500MC: Up to 1800 mm wide
• EN 10149-2 S355MC: Up to 2070 mm wide
• EN 10149-2 S500MC steel plates: Up to 1600 mm wide

Length

• EN 10149-2 S460MC: Up to 16000 mm long
• EN 10149-2 S500MC: Up to 16000 mm long
• EN 10149-2 S355MC: Up to 16000 mm long
• EN 10149-2 S500MC steel plates: Up to 16000 mm long

Chemical Composition

Grade	C (max)	Si (max)	Mn (max)	P (max)	S (max)	Al (min)	Nb (max)	Ti (max)	V (max)
S315MC	0.12	0.50	1.60	0.025	0.015	0.015	0.09	0.15	0.20
S355MC	0.12	0.50	1.70	0.025	0.015	0.015	0.09	0.15	0.20
S420MC	0.12	0.50	1.80	0.025	0.015	0.015	0.09	0.15	0.20
S460MC	0.12	0.50	1.90	0.025	0.015	0.015	0.09	0.15	0.20
S500MC	0.12	0.50	2.00	0.025	0.015	0.015	0.09	0.15	0.20
S550MC	0.12	0.50	2.10	0.025	0.015	0.015	0.09	0.15	0.20
S600MC	0.12	0.50	2.10	0.025	0.015	0.015	0.09	0.15	0.20
S650MC	0.12	0.50	2.10	0.025	0.015	0.015	0.09	0.15	0.20
S700MC	0.12	0.50	2.10	0.025	0.015	0.015	0.09	0.15	0.20

EN 10149-2 Mechanical Properties

Grade	Yield Strength (MPa)	Tensile Strength (MPa)	Elongation (%) (≥ 80mm)	Elongation (%) (≥ 5.65√S₀)
S315MC	≥ 315	390 – 510	22	26
S355MC	≥ 355	430 – 550	21	25
S420MC	≥ 420	480 – 620	19	23
S460MC	≥ 460	520 – 670	17	21
S500MC	≥ 500	550 – 700	16	20
S550MC	≥ 550	600 – 760	14	18
S600MC	≥ 600	650 – 820	14	17
S650MC	≥ 650	700 – 880	12	16
S700MC	≥ 700	750 – 950	12	15

Physical Properties

Property	Value (Approximate)
Density	7.85 g/cm³
Thermal Conductivity	45 W/m·K
Electrical Resistivity	0.15 Ω·mm²/m
Specific Heat Capacity	500 J/kg·K

Applications

• Automotive structural components
• Construction and engineering machinery
• Truck and trailer frames
• Cold-formed parts and profiles