X5NiCrAITi31-20（+RA） 1.4958（+RA） - NF EN 10028-7-2000

成分	C	Si	Mn	P	S	Cr	Ni	Cu	N	Ti	Nb	Co	Al	更多
最小值	0.03	-	-	-	-	19	30	-	-	0.2	-	-	0.2	AI+Ti: ≤ 0.7 Ni+Co:30~32.5
最大值	0.08	0.7	1.5	0.015	0.01	22	32.5	0.5	0.03	0.5	0.1	0.5	0.5

X5NiCrAITi31-20（+RA）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	500~750	R_p0.2：≥170 R_p1.0：≥200 ①②	T ＜ 3mm: ≥30 T ≥ 3mm: ≥ 30 ②③	20℃： (l: ≥120；t: ≥80)
P：T ≤ 75	+RA	500~750	R_p0.2：≥210 R_p1.0：≥240 ①②	T ＜ 3mm: ≥30 T ≥ 3mm: ≥ 30 ②③	20℃： (l: ≥120；t: ≥80)

◎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：有；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。

高温下的最小屈服强度

Material designation		Heat treatment condition	Minimum 0.2% proof strength Rp0.2,MPa at a temperature (in°C) of:
Name	Number	Heat treatment condition	100	150	200	250	300	350	400	450	500	550	600
X5NiCrAITi31-20	1.4958	+AT	140	127	115	105	95	90	85	82	80	75	75
			Minimum 1.0% proof strength Rp1.0,MPa at a temperature (in°C) of:
			100	150	200	250	300	350	400	450	500	550	600
			160	147	135	125	115	110	105	102	100	95	95
		+RA	Minimum 0.2% proof strength Rp0.2,MPa at a temperature (in°C) of:
			100	150	200	250	300	350	400	450	500	550	600
			180	170	160	152	145	137	130	125	120	115	110
			Minimum 1.0% proof strength Rp1.0,MPa at a temperature (in°C) of:
			100	150	200	250	300	350	400	450	500	550	600
			205	193	180	172	165	160	155	150	145	140	135

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
X5NiCrAITi31-20 1.4958 465 445 435 425 420 418 415 415 415 - -
① The tensile strength values also apply for the recrystallizing annealed condition(+RA).

热处理指南

Material designation		Hot forming		Heat treatment symbol	Solution anneailing ①②		Post weld heat treatment Steel with ≤ 0.03% C
Name	Number	Temperature ℃	Type of cooling		Temperature ℃ ③④	Type of cooling	Temperature ℃ ⑥	Type of cooling
X5NiCrAITi31-20	1.4958	1150 to 850	air	+AT	1100 to 1200	water,air ⑤	900 to 950 ⑦	air
				+RA	920 to 1000

◎ 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.

⑦ Recommended for components with greater wall thickness.

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	15.4	16	16.5	16.8	17.2	17.5	17.9	18.3	18.6	19	12	460	0.99

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
X5NiCrAITi31-20	1.4958	+AT	500	290	-	-	215	-	(196)	-	-	-
			510	279	-	-	205	-	(186)	-	-	-
			520	267	-	-	195	-	(176)	-	-	-
			530	254	-	-	184	-	(166)	-	-	-
			540	240	-	-	172	-	(155)	-	-	-
			550	225	-	-	160	-	(143)	-	-	-
			560	208	-	-	147	-	(130)	-	-	-
			570	190	-	-	133	-	(117)	-	-	-
			580	172	-	-	119	-	(105)	-	-	-
			590	155	-	-	106	-	(93)	-	-	-
			600	140	-	-	95	-	(83)	-	115	(85)
			610	128	-	-	85	-	(74)	-	109	(79)
			620	118	-	-	78	-	(68)	-	102	(74)
			630	109	-	-	72	-	(63)	-	96	(69)
			640	103	-	-	67	-	(59)	-	90	(64)
			650	97	-	-	63	-	(55)	-	84	(59)
			660	91	-	-	59	-	(52)	-	78	(55)
			670	85	-	-	55	-	(48)	-	73	(51)
			680	80	-	-	52	-	(45)	-	68	(47)
			690	74	-	-	48	-	(41)	-	63	(43)
			700	69	-	-	44	-	(38)	-	58	(40)
		+RA	500	315	-	-	258	-	(242)	-	-	-
			510	297	-	-	241	-	(225)	-	-	-
			520	280	-	-	224	-	(207)	-	-	-
			530	262	-	-	206	-	(190)	-	-	-
			540	243	-	-	189	-	(172)	-	-	-
			550	224	-	-	171	-	(155)	-	164	(132)
			560	204	-	-	153	-	(138)	-	154	(122)
			570	184	-	-	136	-	(122)	-	144	(111)
			580	165	-	-	119	-	(106)	-	133	(101)
			590	147	-	-	104	-	(92)	-	123	(92)
			600	131	-	-	90	-	(80)	-	113	(82)
			610	117	-	-	79	-	(70)	-	103	(74)
			620	106	-	-	70	-	(62)	-	93	(65)
			630	96	-	-	62	-	(55)	-	84	(58)
			640	87	-	-	56	-	(49)	-	75	(51)
			650	80	-	-	51	-	(44)	-	67	(46)
			660	73	-	-	46	-	（40）	-	60	(41)
			670	67	-	-	42	-	（36）	-	55	(37)
			680	61	-	-	38	-	（33）	-	50	(33)
			690	55	-	-	34	-	（29）	-	45	(30)
			700	50	-	-	30	-	（26）	-	41	(27)

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

牌号	X5NiCrAITi31-20（+RA）
	1.4958（+RA）
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	8 g/cm³

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
X5NiCrAITi31-20	1.4958	465	445	435	425	420	418	415	415	415	-	-

1	NF EN 10028-7-2008 压力容器用不锈钢扁平产品
	X5NiCrAITi31-20（+RA） 1.4958（+RA）
2	NF EN 10028-7-2000 压力容器用不锈钢扁平产品
	X5NiCrAITi31-20（+RA） 1.4958（+RA）

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