COLD FORMING MATERIALS

18 MnB4 冷镦用钢丝（CHQ）

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18 MnB4 冷镦用钢丝（CHQ）

直径: 0.40-46mm

拉伸强度: 参考技术信息

Product Detail Technical Information Inspection Packaging

上海创造集团是中国专注于冷轧优质钢丝的标杆企业，整个管理团队拥有20年的行业经验。我们与多家汽车行业一级供应商建立了良好的关系，所有钢丝均来自品牌钢厂。所有订单均100%可追溯。

Specification

+AR

+AC 或 +AC+PE

+AR+C

+AR+C+AC

+AR+C+AC+LC

+AC+C

Specification

- : 连续且平滑

- : 无接缝、重叠、坑坑、划痕和拉拔划痕

- : 不应有锈迹

Specification

- : 汽车产业

- : 建筑业

- : 机械行业

- : 其他行业

Case Study

Products & Service

盘条

酸洗与磷化

冷拉拔

球化退火

检查

成品

1.交货条款组合

表B.1 -交货时热处理条件、产品形式和适用要求的组合

Heat-treatment condition at delivery	Symbol	Products form a			Applicable requirements in cases where the steel concerned has been ordered with reference to the steel names indicated in
Heat-treatment condition at delivery	Symbol	Wire rod	Bar	Wire	TablesB.2,B.3,B.4 or B.5		TablesB.2,B.3,B.4,B.5,B.6 or B,7			Optional
As hot-rolled or peeled	+AR or +PE	X	X	X	Chemical composition as specified in Table B.2	Mechanical properties as specified in TablesB.3,B.4 and B.5	Chemical compositior as specified in Table B.2	Mechanical properties as specified inTablesB,3,B.4 and B.5	Values for hardenability according to Tables B.6 and B.7	Supplementa- ry or special requirements as specified in Annex Eh
Cold drawn	+AR+C	-	X	X
Cold drawn + spheroidized	+AR+C+AC	-	X	X
Cold drawn + spheroidized+skin passed	+AR+C+AC +LC	-	X	X
Spheroidized or spheroidized+peeled	+AC or +AC +PE	X	X	X
Spheroidized+cold drawn	+AC+C		X	X
Treated to ferrite- pearlite structure and hardness range	+FP	-	X	-
Others	Other delivery conditions may be agreed at the time of ordering
a X=applicable,-=not applicable. b If agreed at the time of the enquiry and order.

2.化学成分

表B.2 -表面硬化用钢的化学成分（适用于铸造分析）

Steel name b	% mass fraction a
Steel name b	C	Si c	Mn	P	S	Cr	Ni	Mo	B	Cu
Non-alloy steel grades
C10E2C	0,08 to 0,12	0,30	0,30 to 0,60	0,025	0,025		—		—	0,25
C15E2C	0,13 to 0,17	0,30	0,30 to 0,60	0,025	0,025		—	—	—	0,25
C17E2C	0,15 to 0,19	0,30	0,60 to 0,90	0,025	0,025		—	—	—	0,25
C20E2C	0,18 to 0,22	0,30	0,30 to 0,60	0,025	0,025	—	—		—	0,25
Alloy steel grades
18MnB4	0,16 to 0,20	0,30	0,90 to 1,20	0,025	0,025		—	—	0,0008 to 0,005	0,25
22MnR4	0,20 to 0,24	0,30	0,90 to 1,20	0,025	0,025	——	—	—	0,0008 to 0,005	0,25
17Cr3	0,12 to 0,20	0,30	0,60 to 0,90	0,025	0,025	0,70 to 1,25	—	—	—	0,25
17CrS3	0,12 to 0,20	0,30	0,60 to 0,90	0,025	0,020 to 0,040	0,70 to 1,25	—	—	—	0,25
20Cr4	0,17 to 0,23	0,30	0,60 to 0,90	0,025	0,025	0,90 to 1,20	—	—	—	0,25
20CrS4	0,17 to 0,23	0,30	0,60 to 0,90	0,025	0,020 to 0,040	0,90 to 1,20	—	—	—	0,25
16MnCr5	0,14 to 0,19	0,30	1,00 to 1,30	0,025	0,025	0,80 to 1,10		—	—	0,25
16MnCrS5	0,14 to 0,19	0,30	1,00 to 1,30	0,025	0,020 to 0,040	0,80 to 1,10	—	—		0,25
16MnCrB5	0,14 to 0,19	0,30	1,00 to 1,30	0,025	0,025	0,80 to 1,10	—	—	0,0008 to 0,005	0,25
20MnCrS5	0,17 to 0,22	0,30	1,10 to 1,40	0,025	0,020 to 0,040	1,00 to 1,30	—	—	—	0,25
12CrMo4	0,10 to 0,15	0,30	0,60 to 0,90	0,025	0,025	0,90 to 1,20	—	0,15 to 0,25	—	0,25
18CrMo4	0,15 to 0,21	0,30	0,60 to 0,90	0,025	0,025	0,90 to 1,20	—	0,15 to 0,25	—	0,25
18CrMoS4	0,15 to 0,21	0,30	0,60 to 0,90	0,025	0,020 to 0,040	0,90 to 1,20	—	0,15 to 0,25	—	0,25
20MoCr4	0,17 to 0,23	0,30	0,70 to 1,00	0,025	0,025	0,30 to 0,60		0,40 to 0,50		0,25
20MoCrS4	0,17 to 0,23	0,30	0,70 to 1,00	0,025	0,020 to 0,040	0,30 to 0,60	—	0,40 to 0,50	—	0,25
Elements not quoted in this table should not be intentionally added to the steel without the agreement of the purchaser,except those intended for finishing the heat.All reasonable precautions shall be taken in order to prevent the addition of such elements from scrap or other materials used in the production process,which can affect the hardenability, mechanical properties and applicability To improve the performance of cold heading,it is possible to add Al:0,020 %to 0,050 % a Maximum values unless otherwise indicated. b In the case of steels with hardenability requirements (see Tables B.6 and B.Z),minor deviations from the specified limits are permitted (with the exception of sulfur and phosphorus),provided that they do not exceed 0,01 %for carbon and the values indicated in Table 2 for the other elements. c A lower silicon content or a specific silicon range may be agreed at the time of ordering

3.力学性能

表B.4 -含氮合金钢牌号的机械性能

Steel name	Diameter		Delivery condition
	Diameter		+AR		+AC or +AC+PE		+AR+C		+AR+C+AC		+AR+C+AC+LC		+AC+C
	above mm	up to mm	Rm max. MPa	Za min %	Rm max. MPa	Z min. %	Rm max. MPa	Z min %	Rm max. MPa	Z min. %	Rm max. MPa	Z min. %	Rm max. MPa	Z min. %
18MnB4	2	5	—				—		500	64	540	62
	5	10	580	55	500	64	680	53	480	64	520	62	600	59
	10	40	580	55	500	64	670	53	480	64	520	62	590	59
22MnB4	2	5		—	—				520	64	560	62		—
	5	10	600	55	520	62	720	53	500	64	540	62	630	59
	10	40	600	55	520	62	710	53	500	64	540	62	620	59
a The values are given only for information.

4.硬化性要求

表B.6-具有标准硬化性的钢材牌号的硬度极限（+H级）

Steel name	Symbol	Austenitizing temperature ℃±5℃	Limits of range	Hardness HRC at a distance from quenched end of test piece(in mm)of
Steel name	Symbol	Austenitizing temperature ℃±5℃	Limits of range	1,5	3	5	7	9	11	13	15	20	25	30	35	40
18MnB4	+H	890	max.	46	45	44	41	39	35	32	28	21		—
18MnB4	+H	890	min.	40	38	37	30	21	—	—			—
22MnB4	+H	880	max.	49	48	47	45	42	39	35	32	24	20		—
22MnB4	+H	880	min.	43	41	40	32	23			—	—	—		—
17Cr3	+H	880	max	47	44	40	33	29	27	25	24	23	21	—	—
17CrS3	+H	880	min.	39	35	25	20	—	—	一		—		—	—
20Cr4	+H	900	max.	49	48	46	42	38	36	34	32	29	27	26	24	23
20CrS4	+H	900	min.	41	38	31	26	23	21-	—	—	—	—	—	—	—
16MnCr5	+H	870	max.	47	46	44	41	39	37	35	33	31	30	29	28	27
16MnCrS5	+H	870	min.	39	36	31	28	24	21		一	—				—
16MnCrB5	+H	870	max.	47	46	44	41	39	37	35	33	31	30	29	28	27
16MnCrB5	+H	870	min.	39	36	31	28	24	21			—				—
20MnCrS5	+H	870	max.	49	49	48	46	43	42	41	39	37	35	34	33	32
20MnCrS5	+H	870	min.	41	39	36	33	30	28	26	25	23	21	—	—
12CrMo4	+H	870	max.	44	43	41	38	34	30	28	27	23	21		一	—
12CrMo4	+H	870	min.	36	34	30	26	22	—	—	—	—			—	—
18CrMo4	+H	880	max.	47	46	45	42	39	37	35	34	31	29	28	27	26
18CrMoS4	+H	880	min.	39	37	34	30	27	24	22	21
20MoCr4	+H	910	max.	49	47	44	41	38	35	33	31	28	26	25	24	24
20MoCrS4	+H	910	min.	41	37	31	27	24	22			—				—
10NiCr5	+H	880	max.	41	39	37	34	32	30		—	—		—	—	—
10NiCr5	+H	880	min	32	27	24	22	一	一		—	—			—	—
12NiCr3-2	+H	870	max.	43	40	35	26	21			—	—	—	—	—	—
12NiCr3-2	+H	870	min.	37	32	25	—		—		一	—	—		—
17CrNi6-6	+H	870	max.	47	47	46	45	43	42	41	39	37	35	34	34	33
17CrNi6-6	+H	870	min.	39	38	36	35	32	30	28	26	24	22	21	20	20
20NiCrMo2-2	+H	880	max.	49	48	45	42	36	33	31	30	27	25	24	24	23
20NiCrMoS2-2	+H	880	min.	41	37	31	25	22	20