High Strength Low Alloy - U. S. Steel Košice, s.r.o

Production catalogue

Products / Cold Rolled Products / High Strength Low Alloy /

	Grades
	Chemical properties
	Mechanical properties
	Technical delivery regulations, dimensions, metallurgical certificate
	Dimensions

Application

Cold rolled sheets from structural fine-grained micro-alloyed steels are used for drawn parts. The sheets are characterized with improved cold formability.

Grade comparison according to respective standards

European standard EN 10268/98	Germany SEW 093/87	USA		U. S. Steel Košice, s.r.o.
European standard EN 10268/98	Germany SEW 093/87	ASTM A 607/98 Cl. 1,2 A 715/98	SAE J1392/84	U. S. Steel Košice, s.r.o.
H240LA	ZStE 260		Grade 35 XLK	KODUR H 240 LA
H280LA	ZStE 300	Grade 45	Grade 45 XLK	KODUR H 280 LA
H320LA	ZStE 340	Grade 50	Grade 50 XLK	KODUR H 320 LA
H360LA	ZStE 380	Grade 55		KODUR H 360 LA
H400LA	ZStE 420	Grade 60		KODUR H 400 LA
Symbols: H - cold rolled flat products from high strength steels for cold forming, number - min. R_e in MPa, LA - micro-alloyed steels in accordance with standard EN 10268/98 (low alloy).

Chemical properties

Grades according to EN 10268/98 U. S. Steel Košice, s.r.o.	Heat analysis in %
Grades according to EN 10268/98 U. S. Steel Košice, s.r.o.	C_MAX	Mn_MAX	Si_MAX	P_MAX	S_MAX	Al_MIN	Nb_MAX	V_MAX	Ti_MAX
H240LA	0.10	0.60	0.50	0.025	0.025	0.015	0.090		0.15
KODUR H 240 LA	0.10	0.60	0.40	0.025	0.010	0.015	0.080	0.10	0.10
H280LA	0.10	0.80	0.50	0.025	0.025	0.015	0.090		0.15
KODUR H 280 LA	0.10	0.80	0.40	0.025	0.010	0.015	0.080	0.10	0.10
H320LA	0.10	1.00	0.50	0.025	0.025	0.015	0.090		0.15
KODUR H 320 LA	0.10	1.00	0.40	0.025	0.010	0.015	0.080	0.12	0.10
H360LA	0.10	1.20	0.50	0.025	0.025	0.015	0.090		0.15
KODUR H 360 LA	0.10	1.20	0.40	0.025	0.010	0.015	0.080	0.10	0.10
H400LA	0.10	1.40	0.50	0.025	0.025	0.015	0.090	0.15	a
KODUR H 400 LA	0.10	1.50	0.40	0.025	0.010	0.015	0.090	0.12	0.10

Mechanical properties

Grades according to EN 10268/98 U. S. Steel Košice, s.r.o.	Mechanical properties ¹⁾
	R_{p0.2 MAX}(MPa) ³⁾		R_{m MIN} (MPa)	A_MIN (%)		Angle of bend 180° ⁴⁾
		max. ^{2), 4)}	R_{m MIN} (MPa)	L₀=80 mm	L₀=50 mm	Angle of bend 180° ⁴⁾
H240LA	210 - 310	330	340	27	A₈₀+2%	0.a
KODUR H 240 LA	240 - 310		340	29	31	0.a
H280LA	280 - 360	380	370	24	A₈₀+2%	0.a
KODUR H 280 LA	280 - 360		370	26	28	0.a
H320LA	320 - 410	440	400	22	A₈₀+2%	0.a
KODUR H 320 LA	320 - 410		400	24	26	0.a
H360LA	360 - 460	500	430	20	A₈₀+2%	0.5.a
KODUR H 360 LA	360 - 460		430	22	24	0.5.a
H400LA	400 - 500	540	460	18	A₈₀+2%	0.5.a
KODUR H 400 LA	400 - 500		460	20	22	0.5.a
¹⁾ Samples are taken in rolling direction. ²⁾ Determining value. ³⁾ For EN 10268/98 is tested R_eH. ⁴⁾ Samples are taken transversally to rolling direction. a - sheet thickness in mm.

Technical delivery regulations, dimensions, metallurgical certificate

STANDARDS		European standard EN 10268/98	Germany SEW 093/87	USA		U. S. Steel Košice, s.r.o.
STANDARDS		European standard EN 10268/98	Germany SEW 093/87	ASTM A 607/98, 715/98	SAE J1392/84	U. S. Steel Košice, s.r.o.
Technical delivery regulations	sheets	EN 10268/98	SEW 093/87	A 568/98		ČSN, STN 42 0117/74
	coils					ČSN, STN 42 0117/74
	longitudinally cut strips					ČSN, STN 42 0108/84
Dimensions	sheets	EN 10131/91	DIN 1541/75	A 568/98		ČSN, STN 42 6317/74
	coils					ČSN, STN 42 6317/74
	longitudinally cut strips					ČSN, STN 42 5351/84
Metallurgical certificate		EN 10204/91+A1/95				EN 10204/91+A1/95 ¹⁾
¹⁾ and according to corresponding technical and delivery regulations.

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