United Kingdom · B.S.

762

BS 3604-1:1990 — Steel pipes and tubes for pressure purposes: ferritic alloy steel with specified elevated temperature properties. Specification for seamless and electric resistance welded tubes

Chemical composition

Element	min	max
C	0.17	0.23
Cr	10	12
Cu		0.25
Mn		1
Mo	0.8	1.2
Ni	0.3	0.8
P		0.03
S		0.03
Si		0.5
V	0.25	0.35

Mechanical properties

Heat treatment / condition	Yield strength	Tensile strength	Elongation	Reduction of area	Impact energy	Hardness
Seamless tubes, normalized and tempered	≥490	690–840	≥15

Creep

Temperature ℃	Time h	CRS
480	10000.0h	350.0
480	30000.0h	324.0
480	50000.0h	311.0
480	100000.0h	294.0
480	150000.0h	284.0
480	200000.0h	277.0
480	250000.0h	271.0
490	10000.0h	319.0
490	30000.0h	293.0
490	50000.0h	281.0
490	100000.0h	265.0
490	150000.0h	255.0
490	200000.0h	247.0
490	250000.0h	242.0
500	10000.0h	290.0
500	30000.0h	265.0
500	50000.0h	254.0
500	100000.0h	237.0
500	150000.0h	228.0
500	200000.0h	221.0
500	250000.0h	215.0
510	10000.0h	264.0
510	30000.0h	240.0
510	50000.0h	228.0
510	100000.0h	212.0
510	150000.0h	203.0
510	200000.0h	196.0
510	250000.0h	190.0
520	10000.0h	240.0
520	30000.0h	216.0
520	50000.0h	205.0
520	100000.0h	189.0
520	150000.0h	179.0
520	200000.0h	172.0
520	250000.0h	167.0
530	10000.0h	217.0
530	30000.0h	194.0
530	50000.0h	183.0
530	100000.0h	167.0
530	150000.0h	157.0
530	200000.0h	151.0
530	250000.0h	145.0
540	10000.0h	196.0
540	30000.0h	173.0
540	50000.0h	162.0
540	100000.0h	146.0
540	150000.0h	137.0
540	200000.0h	130.0
540	250000.0h	125.0
550	10000.0h	176.0
550	30000.0h	153.0
550	50000.0h	142.0
550	100000.0h	127.0
550	150000.0h	118.0
550	200000.0h	112.0
550	250000.0h	107.0
560	10000.0h	157.0
560	30000.0h	135.0
560	50000.0h	124.0
560	100000.0h	109.0
560	150000.0h	101.0
560	200000.0h	95.0
560	250000.0h	90.0
570	10000.0h	139.0
570	30000.0h	117.0
570	50000.0h	107.0
570	100000.0h	93.0
570	150000.0h	86.0
570	200000.0h	80.0
570	250000.0h	76.0
580	10000.0h	123.0
580	30000.0h	102.0
580	50000.0h	92.0
580	100000.0h	80.0
580	150000.0h	73.0
580	200000.0h	68.0
580	250000.0h	65.0
590	10000.0h	107.0
590	30000.0h	88.0
590	50000.0h	79.0
590	100000.0h	68.0
590	150000.0h	62.0
590	200000.0h	58.0
590	250000.0h	56.0
600	10000.0h	93.0
600	30000.0h	75.0
600	50000.0h	68.0
600	100000.0h	59.0
600	150000.0h	54.0
600	200000.0h	50.0
600	250000.0h	48.0
610	10000.0h	81.0
610	30000.0h	65.0
610	50000.0h	59.0
610	100000.0h	51.0
610	150000.0h	46.0
610	200000.0h	44.0
610	250000.0h	41.0
620	10000.0h	71.0
620	30000.0h	57.0
620	50000.0h	51.0
620	100000.0h	44.0
620	150000.0h	40.0
620	200000.0h	38.0
620	250000.0h	36.0
630	10000.0h	62.0
630	30000.0h	50.0
630	50000.0h	45.0
630	100000.0h	38.0
630	150000.0h	35.0
630	200000.0h	32.0
630	250000.0h	30.0
640	10000.0h	54.0
640	30000.0h	44.0
640	50000.0h	39.0
640	100000.0h	33.0
640	150000.0h	30.0
650	10000.0h	48.0
650	30000.0h	38.0
650	50000.0h	34.0
650	100000.0h	28.0
660	10000.0h	42.0
660	30000.0h	33.0
660	50000.0h	29.0
670	10000.0h	37.0
670	30000.0h	29.0
680	10000.0h	33.0