Czech Republic · CSN

P 690 QH

CSN EN 10216-3

Chemical composition

wt% · log scale

min – max range
typical value

Mechanical properties

value range by condition

High / low temperature

value vs. temperature

Seamless tubes quenched and tempered +QT > 80 <= 100 mm · Yield strength Rp0.2
Seamless tubes quenched and tempered +QT > 65 <= 80 mm · Yield strength Rp0.2
Seamless tubes quenched and tempered +QT > 40 <= 65 mm · Yield strength Rp0.2
Seamless tubes quenched and tempered +QT > 20 < 40 mm · Yield strength Rp0.2

Chemical composition

Element	min	max	Remarks
Al	0.02
C		0.2
Cr		1.5
Cu		0.3	In order to facilitate subsequent forming operation
Mn	1.2	1.7
Mo		0.7
N		0.015
Nb		0.06
Ni		2.5
P		0.025
S		0.015
Si		0.8
Ti		0.05
V		0.12

Mechanical properties

Heat treatment / condition	Yield strength	Tensile strength	Elongation	Impact energy
Seamless tubes +QT, 12 < T <= 20 mm	≥690 Yield strength is the upper yield strength	770–960	≥16 Long.
Seamless tubes +QT, 20 < T <= 40 mm	≥650 Yield strength is the upper yield strength	720–900	≥16 Long.
Seamless tubes +QT, 40 < T <= 50 mm	≥615 Yield strength is the upper yield strength	720–900	≥16 Long.
Seamless tubes +QT, 40 < T <= 65 mm				≥35 KV (20°C)；≥31 KV (0°C)；≥27 KV (-10°C)；≥50 KV (20°C)；≥45 KV (0°C)；≥40 KV (-10°C)
Seamless tubes +QT, 50 < T <= 65 mm	≥580 Yield strength is the upper yield strength	670–850	≥16 Long.
Seamless tubes +QT, 65 < T <= 80 mm	≥540	620–800	≥16
Seamless tubes +QT, 80 < T <= 100 mm	≥500	620–800	≥16
Seamless tubes +QT, T <= 12 mm	≥690 Yield strength is the upper yield strength	770–960	≥16 Long.
Seamless tubes +QT, T <= 40 mm				≥39 KV (20°C)；≥35 KV (0°C)；≥31 KV (-10°C)；≥27 KV (-20°C)；≥55 KV (20°C)；≥47 KV (0°C)；≥43 KV (-10°C)；≥40 KV (-20°C)

High/low temperature

Yield strength Rp0.2 (MPa)

Condition	Temperature ℃	Approx.
Seamless tubes quenched and tempered +QT > 80 <= 100 mm	300	410
Seamless tubes quenched and tempered +QT > 80 <= 100 mm	250	420
Seamless tubes quenched and tempered +QT > 80 <= 100 mm	200	430
Seamless tubes quenched and tempered +QT > 80 <= 100 mm	150	440
Seamless tubes quenched and tempered +QT > 80 <= 100 mm	100	450
Seamless tubes quenched and tempered +QT > 65 <= 80 mm	300	450
Seamless tubes quenched and tempered +QT > 65 <= 80 mm	250	460
Seamless tubes quenched and tempered +QT > 65 <= 80 mm	200	470
Seamless tubes quenched and tempered +QT > 65 <= 80 mm	150	480
Seamless tubes quenched and tempered +QT > 65 <= 80 mm	100	490
Seamless tubes quenched and tempered +QT > 40 <= 65 mm	300	470
Seamless tubes quenched and tempered +QT > 40 <= 65 mm	250	480
Seamless tubes quenched and tempered +QT > 40 <= 65 mm	200	490
Seamless tubes quenched and tempered +QT > 40 <= 65 mm	150	500
Seamless tubes quenched and tempered +QT > 40 <= 65 mm	100	510
Seamless tubes quenched and tempered +QT > 20 < 40 mm	300	510
Seamless tubes quenched and tempered +QT > 20 < 40 mm	250	520
Seamless tubes quenched and tempered +QT > 20 < 40 mm	200	530
Seamless tubes quenched and tempered +QT > 20 < 40 mm	150	540
Seamless tubes quenched and tempered +QT > 20 < 40 mm	100	550
Seamless tubes quenched and tempered +QT <= 20 mm	300	550
Seamless tubes quenched and tempered +QT <= 20 mm	250	560
Seamless tubes quenched and tempered +QT <= 20 mm	200	570
Seamless tubes quenched and tempered +QT <= 20 mm	150	580
Seamless tubes quenched and tempered +QT <= 20 mm	100	590

Tensile strength Rm (MPa)

Condition	Temperature ℃	Approx.
Seamless tubes quenched and tempered +QT > 80 <= 100 mm	300	540
Seamless tubes quenched and tempered +QT > 80 <= 100 mm	250	540
Seamless tubes quenched and tempered +QT > 80 <= 100 mm	200	540
Seamless tubes quenched and tempered +QT > 80 <= 100 mm	150	560
Seamless tubes quenched and tempered +QT > 80 <= 100 mm	100	580
Seamless tubes quenched and tempered +QT > 65 <= 80 mm	300	570
Seamless tubes quenched and tempered +QT > 65 <= 80 mm	250	570
Seamless tubes quenched and tempered +QT > 65 <= 80 mm	200	570
Seamless tubes quenched and tempered +QT > 65 <= 80 mm	150	590
Seamless tubes quenched and tempered +QT > 65 <= 80 mm	100	610
Seamless tubes quenched and tempered +QT > 40 <= 65 mm	300	570
Seamless tubes quenched and tempered +QT > 40 <= 65 mm	250	570
Seamless tubes quenched and tempered +QT > 40 <= 65 mm	200	570
Seamless tubes quenched and tempered +QT > 40 <= 65 mm	150	590
Seamless tubes quenched and tempered +QT > 40 <= 65 mm	100	610
Seamless tubes quenched and tempered +QT > 20 < 40 mm	300	620
Seamless tubes quenched and tempered +QT > 20 < 40 mm	250	620
Seamless tubes quenched and tempered +QT > 20 < 40 mm	200	620
Seamless tubes quenched and tempered +QT > 20 < 40 mm	150	640
Seamless tubes quenched and tempered +QT > 20 < 40 mm	100	660
Seamless tubes quenched and tempered +QT <= 20 mm	300	670
Seamless tubes quenched and tempered +QT <= 20 mm	250	670
Seamless tubes quenched and tempered +QT <= 20 mm	200	670
Seamless tubes quenched and tempered +QT <= 20 mm	150	690
Seamless tubes quenched and tempered +QT <= 20 mm	100	710

Impact energy Kv/Ku (J)

Condition	Temperature ℃	min	Remarks
Seamless tubes quenched and tempered +QT 40 < T <= 65 mm +T	-10	27	KV
Seamless tubes quenched and tempered +QT 40 < T <= 65 mm +T	-10	40	KV
Seamless tubes quenched and tempered +QT T <= 40 mm +T	-10	31	KV
Seamless tubes quenched and tempered +QT T <= 40 mm +T	-20	27	KV
Seamless tubes quenched and tempered +QT T <= 40 mm +T	-10	43	KV
Seamless tubes quenched and tempered +QT T <= 40 mm +T	-20	40	KV