X6CrNi18-10 1.4948 - NF EN 10028-7-2000

牌号	X6CrNi18-10
	1.4948
对应标准	NF EN 10028-7-2000 压力容器用不锈钢扁平产品 Flat products made of steels for pressure purposes Part 7: Stainless steels
归类	奥氏体不锈钢
标签	标准等级
密度	7.9 g/cm³

X6CrNi18-10 化学元素成分含量(%)

成分	C	Si	Mn	P	S	Cr	Ni	N
最小值	0.04	-	-	-	-	17	8	-
最大值	0.08	1	2	0.035	0.015	19	11	0.11

◎ 未经买方同意，不得随意向钢中添加表中未列的元素，冶炼精加工除外。采取一切必要措施以防在废钢和生产原料中带入这些元素，因为其会削弱钢的机械性能，降低钢的适用性。

碳当量计算

X6CrNi18-10 机械性能

条件	热处理或状态	抗拉强度 σ_b Mpa	屈服点 σ_s Mpa	断后伸长率或延伸率 δ %	冲击吸收能量 KV2 J
C：T ≤ 6	+AT	530~740	R_p0.2：≥230 R_p1.0：≥260 ①②	T ＜ 3mm: ≥45 T ≥ 3mm: ≥ 45 ②③④	20℃： (l: ≥100；t: ≥60)
H：T ≤ 12	+AT	510~710	R_p0.2：≥210 R_p1.0：≥250 ①②	T ＜ 3mm: ≥45 T ≥ 3mm: ≥ 45 ②③	20℃： (l: ≥100；t: ≥60)
P：T ≤ 75	+AT	510~710	R_p0.2：≥190 R_p1.0：≥230 ①②	T ＜ 3mm: ≥45 T ≥ 3mm: ≥ 45 ②③	20℃： (l: ≥100；t: ≥60)

◎C- 冷轧带钢; H- 热轧带钢; P- 热轧中厚板；T- 厚度；t- 横向；l-纵向。
◎+A=软化退火；+AT=固溶退火；+QT=淬火及回火；+RA=再结晶退火。

◎ 如果热加工和随后冷却的条件符合ENISO3651-2中对产品机械性能和抗晶间腐蚀性的要求，则可以省略固溶处理。
*抗晶间腐蚀根据EN ISO 3651-2进行测试。在交货条件下：无；在致敏状态下：无。
① 对于连续热轧产品，可在询价和订购时商定Rp0.2(即表中σs)的最小值提高20MPa，Rp1.0的最小值提高10MPa。
② 如果在轧制宽度<300mm的带材情况下，采用纵向试验件，最小值减小如下:屈服强度-15MPa，恒定标距的延伸率-5%，比例标距延伸率-2%。
③ T＜3mm：该值适用于标距为80mm、宽度为20mm的试件，也可以使用标距为50mm、宽度为12.5mm的试件。T ≥3mm：该值适用于标距为5.65√S的试件。
④ 对于矫直材料，最小值低5%。

高温下的最小屈服强度

Material designation		Heat treatment condition	Minimum 0.2% proof strength R_p0.2,MPa at a temperature (in°C) of:
Name	Number	Heat treatment condition	100	150	200	250	300	350	400	450	500	550	600
X6CrNi18-10	1.4948	+AT	157	142	127	117	108	103	98	93	88	83	78
			Minimum 1.0% proof strength R_p1.0,MPa at a temperature (in°C) of:
			100	150	200	250	300	350	400	450	500	550	600
			191	172	157	147	137	132	127	122	118	113	108

高温下的最小抗拉强度

Material designation Minimum tensile strength R_m,MPa
at a temperature (in°C) of:
Name Number 100 150 200 250 300 350 400 450 500 550 600
X6CrNi18-10 1.4948 440 410 390 385 375 375 375 370 360 330 300

热处理指南

Material designation		Hot forming		Heat treatment symbol	Solution anneailing ①②		Post weld heat treatment Creep resisting steels
Name	Number	Temperature ℃	Type of cooling	Heat treatment symbol	Temperature ℃ ③④	Type of cooling	Temperature ℃ ⑥	Type of cooling
X6CrNi18-10	1.4948	1150 to 850	air	+AT	1050 to 1110	water,air ⑤	not recommended	-

◎ a=air; o=oil; w=water.
◎ Scale and annealing colours produced during hot forming, heat treatment or welding may adversely affect the corrosion resistance. They should be removed as far as possible before use, e.g. by pickling.
◎ The temperatures of annealing should be agreed for simulated heat treated test pieces.
① The solution treatment may be omitted if the conditions for hot working and subsequent cooling are such that the requirements for the mechanical properties of the product and the resistance to intergranular corrosion as defined in EN ISO 3651-2 are obtained and provided these requirements are met even after appropriate subsequent solution annealing.
② Re-crystallizing annealing.
③ If heat treatment is carried out in a continuous furnace, the upper part of the range specified is usually preferred, or even exceeded.
④ The lower end of the range specified for solution annealing should be aimed at for heat treatment as part of further processing,because otherwise the mechanical properties might be affected. If the temperature of hot forming does not drop below the lower temperature for solution annealing.a temperature of 980℃ is adequate as a lower limit for Mo-free steels,a temperature of 1000℃ for steels with Mo contents up to 3% and a temperature of 1020℃ for steets with Mo contents exceeding 3%.

⑤ cooling sufficiently rapid.

⑥ Minimum holding time:30min.

物理性能

Modulus of elasticity at											Mean coefficient of thermal expansion between 20 ℃ and										Thermal conductivity at 20℃	Specific thermal capacity at 20℃	Specific electrical resistivity at 20℃
20°C	100°C	200°C	300°C	400°C	500°C	600°C	700°C	800°C	900°C	1000°C	100°C	200°C	300°C	400°C	500°C	600°C	700°C	800°C	900°C	1000°C	Thermal conductivity at 20℃	Specific thermal capacity at 20℃	Specific electrical resistivity at 20℃
KN/mm²											10^-6 K^-1										W/m.K	J/kg.K	Ω.mm²/m
200	190	185	175	170	160	155	145	140	135	125	16.3	16.9	17.3	17.8	18.2	18.5	18.7	-	-	-	17	450	0.71

蠕变性能

Designation		Heat treatment condition	Temperature	Strength for rupture							Strength for 1% (plastic) creep strain
Designation			Temperature	in N/mm² for ①
Name	Number		°C	10000h	30000h	50000h	100000h	150000h	200000h	250000h	10000h	100000h
X6CrNi18-10	1.4948	+AT	500	250	-	-	192	-	176	-	147	114
			510	239	-	-	182	-	166	-	142	111
			520	227	-	-	172	-	156	-	137	108
			530	215	-	-	162	-	146	-	132	104
			540	203	-	-	151	-	136	-	127	100
			550	191	165	155	140	-	125	-	121	96
			560	177	154	145	128	-	114	-	116	92
			570	165	144	136	117	-	104	-	111	88
			580	154	135	126	107	-	95	-	106	84
			590	143	126	118	98	-	86	-	100	79
			600	132	117	110	89	-	78	-	94	74
			610	122	109	102	81	-	70	-	88	69
			620	113	101	94	73	-	62	-	82	63
			630	104	94	87	65	-	55	-	75	56
			640	95	-	-	58	-	49	-	68	49
			650	87	-	-	52	-	43	-	61	43
			660	80	-	-	47	-	38	-	55	37
			670	73	-	-	42	-	34	-	49	32
			680	67	-	-	37	-	30	-	44	28
			690	61	-	-	32	-	26	-	39	25
			700	55	-	-	28	-	22	-	35	22
			710	(45)	-	-	(22)	-	-	-	(31)	(15)
			720	(41)	-	-	(20)	-	-	-	(28)	(14)
			730	(38)	-	-	(18)	-	-	-	(26)	(13)
			740	(36)	-	-	(16)	-	-	-	(25)	(12)
			750	(34)	-	-	(15)	-	-	-	(24)	(11)

◎ Values were taken from DIN 17460 .
① Values in parantheses involved time and/or stress extrapolation; values with asterisk involved time extrapolation.

X6CrNi18-10 对应不同标准

1	EN 10088-1-2005 不锈钢第1部分:不锈钢的清单
	X6CrNi 18-10 1.4948
2	EN 10269-2006 规定高温和/或低温性能的紧固件用钢和镍合金
	X6CrNi18-10 1.4948
3	EN 10269-2013 规定高温和/或低温性能的紧固件用钢和镍合金
	X6CrNi 18-10 1.4948
4	NF EN 10269-1999 用于高温或低温条件下的紧固件用钢及镍合金
	X6CrNi18-10 1.4948
5	DIN EN 10269-2014 规定高温和/或低温性能的紧固件用钢和镍合金
	X6CrNi 18-10 1.4948
6	ISO 9328-7-2018 不锈钢承压扁钢制品
	X6CrNi18-10
7	EU 95-1979 耐热钢：交货技术条件
	X6CrNi 18-10
8	NF EN 10088-1-2005 不锈钢 - 第1部分：不锈钢清单
	X6CrNi18-10 1.4948
9	NF EN 10028-7-2008 压力容器用不锈钢扁平产品
	X6CrNi18-10 1.4948
10	NF EN 10028-7-2000 压力容器用不锈钢扁平产品
	X6CrNi18-10 1.4948

注：数据仅供参考！如有疑问，请填写"我要纠错"！

Material designation		Minimum tensile strength R_m,MPa at a temperature (in°C) of:
Name	Number	100	150	200	250	300	350	400	450	500	550	600
X6CrNi18-10	1.4948	440	410	390	385	375	375	375	370	360	330	300

高温下的最小屈服强度

高温下的最小抗拉强度

热处理指南

物理性能

蠕变性能