Ferritic steels

Short name	Material no.	C	Si	Mn max.	P max.	S max.	Al	Cr	Ni	Scale temperature
X 10 CrAl 7	1.4713	≤ 0,12	0,5-1,0	1,0	0,040	0,030	0,5-1,0	6,0-8,0	–	800
X 7 CrTi 12 5)	1.4720	≤ 0,08	≤ 0,1	1,0	0,040	0,030	–	10,5-12,5	–	800
X 10 CrAl 13	1.4724	0,12	0,7-1,4	1,0	0,040	0,030	0,7-1,2	12,0-14,0	–	850
X 10 CrAl 18	1.4742	0,12	0,7-1,4	1,0	0,040	0,030	0,7-1,2	17,0-19,0	–	1000
X 18 CrN 28 3)	1.4749	0,15-0,20	max. 1,0	1,0	0,040	0,030	–	24,0-29,0	–	1100
X 10 CrAl 24	1.4762	0,12	0,7-1,4	1,0	0,040	0,030	1,2-1,7	23,0-26,0	–	1150

 

Ferritic austenitic steels

Short name	Material no.	C	Si	Mn max.	P max.	S max.	Al	Cr	Ni	Scale temperature
X 20 CrNiSi 25 4	1.4821	0,10-0,20	0,8-1,5	2,0	0,040	0,030	–	24,0-27,0	3,5-5,5	1100

 

Austenitic steels

Short name	Material no.	C	Si	Mn max.	P max.	S max.	Al	Cr	Ni	Scale temperature
X 15 CrNiSi 20 12	1.4828	≤ 0,20	1,5-2,5	2,0	0,045	0,030	–	19,0-21,0	10,0-13,0	1000
X 15 CrNiSi 25 20	1.4841	≤ 0,20	1,5-2,5	2,0	0,045	0,030	–	24,0-26,0	19,0-22,0	1150
X 12 CrNi 25 21	1.4845	≤ 0,15	≤ 0,75	2,0	0,045	0,030	–	24,0-26,0	19,0-22,0	1050
X 10 NiCrAlTi 32 202	1.4876	≤ 0,12	≤ 1,0	2,0	0,030	0,020	0,15-0,6	19,0-23,0	30,0-34,0	1100
X 5 NiCrCeNb 32 27	1.4877	≤ 0,08	≤ 0,3	1,0	0,015	0,010	≤ 0,025	26,0-28,0	31,0-33,0	1000
X 12 CrNiTi 18 91	1.4878	≤ 0,12	≤ 1,0	2,0	0,045	0,030	–	17,0-19,0	9,0-12,0	850
X 9 CrNiSiNCe	1.4893	≤ 0,08	≤ 1,7	1,0	–	–	–	21	11	1150

 

Nickel steels

Short name	Material no.	C	Si	Mn max.	P max.	S max.	Al	Cr	Ni	FE	CU max.	Scale temperature
NiCr 15 Fe	2.4816	0,08	0,50	1,00	0,015	0,015	–	14-17	Rest	6-10%	–	1000
NiCr 23 Fe	2.4851	0,10	0,50	1,00	0,020	0,015	1-1,7	21-25	58-63	Rest	1,0	1150
NiCr22 Mo9Nb	2.4856	0,10 max.	0,08 max.	–	0,040	0,020	–	19-23	Rest	5,0 max.	15,0-17,0	1120
NiCr21 Mo	2.4858	≤ 0,12	0,5 max.	1,00	–	0,030	0,02 max.	19,5-23,5	38-46	22 min.	2,5-3,5	–
NiMo16Cr16Ti	2.4610	0,015 max.	0,015 max.	1,00	0,040	0,030	–	14-18	Rest	3	14,0-17,0	1050

 

Composition in % and scale resistance in the air (°C)

Material no.	Short name	AISI	JIS	SIS	JUS	BS	AFNOR	UNI	GOST	Alloy	UNS
1.4700	8 CrSi 7 7	–	–	–	–	–	–	–	–	–	–
1.4713	X 10 CrAl 7	–	–	–	–	–	Z 8 CA 7	–	15 Ch 6 SJu	–	–
1.4720	X 7 CrTi 12	409	–	–	–	–	–	–	–	–	–
1.4724	X 10 CrAl 13	–	–	–	–	403 S 17	–	X 10 CrAl 12	10 Ch 13 SJu	–	–
1.4742	X 10 CrAl 18	–	–	–	–	430 S 15	Z 10 CAS 18	–	–	–	–
1.4749	X 18 CrN 28	446	SUH 446	2322	–	–	Z 10 C 24	X 16 Cr 26	15 Ch 28	–	–
1.4762	X 10 CrAl 24		–	–	C4970	–	Z 10 CAS 24	–	–	–	–
1.4821	X 20 CrNiSi 25 4	327	–	2323	C4576	–	Z 20 CNS 25-04	–	–	–	–
1.4828	X 15 CrNiSi 20 12	309	SUH 309	–	–	309 S 24	Z 15 CNS 20-12	–	20 Ch 20 N 14 S 2	–	–
1.4841	X 15 CrNiSi 25 20	314	–	–	C4578	–	Z 12 CNS 25 20	X 16 CrNiSi 25 20	20 Ch 25 N 20 S 2	–	–
1.4845	X 12 CrNi 25 21	310 S/H	SUH 310	2361	–	310 S 24	Z 12 CN 25 20	X 22 CrNi 25 20	–	–	–
1.4876	X 10 NiCrAlTi 32 20	–	–	–	–	3073	–	–	–	Alloy 800	N 08800/ 10/11 H HT
1.4878	X 12 CrNiTi 18 9	321	SUS 321	2337	C4572	321 S 20	Z 6 CNT 18-10	X 6 CrNiTi 18 11	12 Ch 48 N 10 T	–	–
2.4816	NiCr 15 Fe	–	–	–	–	3073	–	–	–	Alloy 600	N 06600
2.4851	NiCr 23 Fe	–	–	–	–	–	–	–	–	Alloy 601	N 06601