X8CrNiNb16-13

2023-05-17 15:30:19 来源：钢铁之家阅读量：0

牌号	X8CrNiNb16-13
	1.4961
对应标准	NF EN 10028-7-2008 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	抗蠕变等级

X8CrNiNb16-13 化学元素成分含量(%)

成分	C	Si	Mn	P	S	Cr	Ni	更多
最小值	0.04	0.3	-	-	-	15	12	Nb:10×C~1.2
最大值	0.1	0.6	1.5	0.035	0.015	17	14	Nb:10×C~1.2

◎ 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

X8CrNiNb16-13 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
P：T ≤ 75	+AT	510~690	R_p0.2：≥200 R_p1.0：≥240 ①②	T ＜ 3mm: ≥35 T ≥ 3mm: ≥ 35 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。

◎ 奥氏体钢有足够的韧性，不需要进行冲击试验。相比之下，奥氏体-铁素体钢必须按要求做冲击试验，以确保足够的韧性。
*抗晶间腐蚀根据EN ISO 3651-2进行测试。在交货条件下：有；在致敏状态下：有。
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:抗拉强度-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。

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	50①	100	150	200	250	300	350	400	450	500	550	600
X8CrNiNb16-13	1.4961	+AT	191	175	166	157	147	137	132	128	123	118	118	113
			Minimum 1.0% proof strength R_p1.0,MPa at a temperature (in°C) of:
			50①	100	150	200	250	300	350	400	450	500	550	600
			227	205	195	186	176	167	162	157	152	147	147	142

① Determined by linear interpolation.

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 50① 100 150 200 250 300 350 400 450 500 550 600
X8CrNiNb16-13 1.4961 493 465 440 420 400 385 375 370 360 350 340 320
① Determined by linear interpolation.

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
X8CrNiNb16-13	1.4961	1150 to 850	air	+AT	1050 to 1110	water,air ⑤	900 to 950 ⑦	air

◎ 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.Minimum holding time:30min.

⑦ Minimum holding time:30min.

蠕变性能

Designation		Heat treatment condition	Temperature	Strength for rupture							Strength for 1% (plastic) creep strain
Designation			Temperature	in MPa for ①
Name	Number		°C	10000h	30000h	50000h	100000h	150000h	200000h	250000h	10000h	100000h
X8CrNiNb16-13	1.4961	+AT	580	182	-	-	129	-	115	-	127	91
			590	170	-	-	119	-	105	-	120	84
			600	157	-	-	108	-	94	-	113	78
			610	145	-	-	98	-	85	-	106	73
			620	134	-	-	89	-	77	-	99	67
			630	124	-	-	80	-	69	-	92	61
			640	113	-	-	72	-	61	-	85	55
			650	103	-	-	64	-	53	-	78	49
			660	93	-	-	57	-	47	-	72	44
			670	84	-	-	50	-	41	-	66	39
			680	76	-	-	44	-	36	-	59	34
			690	70	-	-	39	-	31	-	54	30
			700	64	-	-	34	-	27	-	49	26
			710	59	-	-	30	-	25	-	45	24
			720	55	-	-	27	-	22	-	42	21
			730	51	-	-	25	-	19	-	39	19
			740	47	-	-	22	-	17	-	36	17
			750	44	-	-	20	-	15	-	34	16

◎ Values were taken from DIN 17460 [3].
① Values in parantheses involved time and/or stress extrapolation; values with asterisk involved time extrapolation.

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Material designation		Minimum tensile strength R_m,MPa at a temperature (in°C) of:
Name	Number	50①	100	150	200	250	300	350	400	450	500	550	600
X8CrNiNb16-13	1.4961	493	465	440	420	400	385	375	370	360	350	340	320

X8CrNiNb16-13

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

蠕变性能