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【不銹鋼管常識】GB/T14975結(jié)構(gòu)用不銹鋼無縫鋼管

結(jié)構(gòu)用不銹鋼無縫鋼管

熱軋（擠、擴）鋼管				冷拔（軋）鋼管
尺寸		允許偏差		尺寸		允許偏差
		普通級	高級			普通級	高級
公稱外徑D	68-159	±1.25%D	±1.0%D	公稱外徑D	10-30	±0.30	±0.02
					>30-50	±0.40	±0.30
	>159-426	±1.5%D			>50	±0.9%D	±0.8%D
公稱壁厚 S	<15	+15%S -12.5%S	±12.5%S	公稱壁厚 S	≤3	±14%S	+12.5%S -10%S
	≥15	+20%S -15%S			>3	+12.5%S -10%S	±10%S

牌號	化學(xué)成分（質(zhì)量分數(shù)）(%)
	C	Si	Mn	P	S	Ni	Cr	Mo	Ti	其它
0Cr18Ni9	≤0.07	≤1.00	≤2.00	≤0.035	≤0.030	8.00-11.00	17.00-19.00
1Cr18Ni9	≤0.15	≤1.00	≤2.00	≤0.035	≤0.030	8.00-10.00	17.00-19.00
00Cr19Ni10	≤0.030	≤1.00	≤2.00	≤0.035	≤0.030	8.00-12.00	18.00-20.00
0Cr18Ni10Ti	≤0.08	≤1.00	≤2.00	≤0.035	≤0.030	9.00-12.00	17.00-19.00		≥5C%
0Cr18Ni11Nb	≤0.08	≤1.00	≤2.00	≤0.035	≤0.030	9.00-13.00	17.00-19.00			Nb≥10C%
0Cr17Ni12Mo2	≤0.08	≤1.00	≤2.00	≤0.035	≤0.030	10.00-14.00	16.00-18.50	2.00-3.00
00Cr17Ni14Mo2	≤0.030	≤1.00	≤2.00	≤0.035	≤0.030	12.00-15.00	16.00-18.00	2.00-3.00
0Cr18Ni12Mo2Ti	≤0.08	≤1.00	≤2.00	≤0.035	≤0.030	11.00-14.00	16.00-19.00	1.80-2.50	5C%-0.70
1Cr18Ni12Mo2Ti	≤0.12	≤1.00	≤2.00	≤0.035	≤0.030	11.00-14.00	16.00-19.00	1.80-2.50	5(C%-0.02)-0.80
0Cr18Ni12Mo3Ti	≤0.08	≤1.00	≤2.00	≤0.035	≤0.030	11.00-14.00	16.00-19.00	2.50-3.50	5C%-0.70
1Cr18Ni12Mo3Ti	≤0.12	≤1.00	≤2.00	≤0.035	≤0.030	11.00-14.00	16.00-19.00	2.50-3.50	5(C%-0.02)-0.80
1Cr18Ni9Ti	≤0.12	≤1.00	≤2.00	≤0.035	≤0.030	8.00-11.00	17.00-19.00		5(C%-0.02)-0.80
0Cr19Ni13Mo3	≤0.08	≤1.00	≤2.00	≤0.035	≤0.030	11.00-15.00	18.00-20.00	3.00-4.00
00Cr19Ni13Mo3	≤0.030	≤1.00	≤2.00	≤0.035	≤0.030	11.00-15.00	18.00-20.00	3.00-4.00
00Cr18Ni10N	≤0.030	≤1.00	≤2.00	≤0.035	≤0.030	8.50-11.50	17.00-19.00			N:0.12-0.22
0Cr19Ni9N	≤0.08	≤1.00	≤2.00	≤0.035	≤0.030	7.00-10.50	18.00-20.00			N:0.10-0.25
00Cr17Ni13Mo2N	≤0.030	≤1.00	≤2.00	≤0.035	≤0.030	10.50-14.50	16.00-18.50	2.00-3.00		0.12-0.22
0Cr17Ni12Mo2N	≤0.08	≤1.00	≤2.00	≤0.035	≤0.030	10.00-14.00	16.00-18.00	2.00-3.00		0.10-0.22
1Cr17	≤0.12	≤0.75	≤1.00	≤0.035	≤0.030	*	16.00-18.00
0Cr13	≤0.08	≤1.00	≤1.00	≤0.035	≤0.030	*	11.50-13.50
1Cr13	≤0.15	≤1.00	≤1.00	≤0.035	≤0.030	*	11.50-13.50
2Cr13	0.16-0.25	≤1.00	≤1.00	≤0.035	≤0.030	*	12.00-14.00
00Cr18Ni5Mo3Si2	≤0.030	1.30-2.00	1.00-2.00	≤0.035	≤0.030	4.50-5.50	18.00-19.00	2.50-3.00

牌號	推薦熱處理制度	力學(xué)性能			密度/(kg/dm30)
		σb /Mpa	σp0.2/Mpa	δ5（%）
		不小于
0Cr18Ni9	1010-1150℃，急冷	520	205	35	7.93
1Cr18Ni9	1010-1150℃，急冷	520	205	35	7.90
00Cr19Ni10	1010-1150℃，急冷	480	175	35	7.93
0Cr18Ni10Ti	920-1150℃，急冷	520	205	35	7.95
0Cr18Ni11Nb	980-1150℃，急冷	520	205	35	7.98
0Cr17Ni12Mo2	1010-1150℃，急冷	520	205	35	7.98
00Cr17Ni14Mo2	1010-1150℃，急冷	480	175	35	7.98
0Cr18Ni12Mo2Ti	1000-1100℃，急冷	530	205	35	8.00
1Cr18Ni12Mo2Ti	1000-1100℃，急冷	530	205	35	8.00
0Cr18Ni12Mo3Ti	1000-1100℃，急冷	530	205	35	8.10
1Cr18Ni12Mo3Ti	1000-1100℃，急冷	530	205	35	8.10
1Cr18Ni9Ti	1000-1100℃，急冷	520	205	35	7.90
0Cr19Ni13Mo3	1010-1150℃，急冷	520	205	35	7.98
00Cr19Ni13Mo3	1010-1150℃，急冷	480	175	35	7.98
00Cr18Ni10N	1010-1150℃，急冷	550	245	40	7.90
0Cr19Ni9N	1010-1150℃，急冷	550	275	35	7.90
00Cr17Ni13Mo2N	1010-1150℃，急冷	550	245	40	8.00
0Cr17Ni12Mo2N	1010-1150℃，急冷	550	275	35	7.80
1Cr17	780-850℃，空冷或緩冷	410	245	20	7.70
0Cr13	800-900℃，緩冷或750℃快冷	370	180	22	7.70
1Cr13	800-900℃，緩冷	410	205	20	7.70
2Cr13	800-900℃，緩冷	470	215	19	7.70
00Cr18Ni5Mo3Si2	920-1150℃，急冷	590	390	20	7.98