COLD FORMING MATERIALS

38 Cr2 CHQ钢丝

MATERIALSENGINEERINGCREATION GROUP

产品中心 / 38 Cr2 CHQ钢丝

38 Cr2 CHQ钢丝

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

+AC 或 +AC+PE

+AC+C+AC

+AC+C+AC+LC

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

1.交货条款组合

表C.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

Symbo

Products form a

Applicable requirements in cases where the steel concerned has been ordered with reference to the steel names indicated in

Wire rod

Bar

Wire

Tables C.2,C.3,C.4, C.5 or C.6

Tables C.2,C.3,C.4,C.5,C,6,C.Z C.8 or C.9

Tables C.2,C.3,C.4,C.5,C.6 or C.10

Optional

As hot-rolled or peeled

+AR or +PE

Chemical compo- sition as speci- fied in Tables C.2 and C.3

Me- chanical properties as spec- ified in Tables C.4. C.5 and C.6

Chemical compo- sition as speci- fied in Tables C.2 and C.3

Me- chanical properties as spec- ified in Tables C.4, C.5 and C.6

Values for harden- ability according to Tables C.Z C.8 and C.9

Chemical compo- sition as speci- fied in Tables C.2 and C.3

Me- chanical properties as spec- ified in Tables C.4. C.5 and C.6

Mini- mum core hardness and max- imum diameter accord- ing to TableC.10

Supplementa- ry or special requirements as specified in Annex Eb

Cold drawn

+AR +C

—

Cold drawn + spheroidized

+AR+C+ AC

—

Cold drawn + spheroidized + skin passed

+AR+C +AC +LC

—

Spheroidized or spheroidized + peeled

+AC or +AC+PE

Spheroidized + cold drawn

+AC+C

—

Spheroidized+ cold drawn +spheroidized

+AC+C+ AC

Spheroidized + cold drawn +sphe- roidized +skin passed

+AC+C+ AC+LC

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C.3-调质用含氮合金钢牌号的化学成分（适用于铸造分析）

Steel name b

% mass fraction

Si c

Cr d

17B2

0,15 to 0,20

0,30

0,60 to 0,90

0,025

0,30

0,0008 to 0,005

0,25

23B2

0,20 to 0,25

0,30

0,60 to 0,90

0,025

0,30

0,0008 to 0,005

0,25

28B2

0,25 to 0,30

0,30

0,60 to 0,90

0,025

0,30

——

0,0008 to 0,005

0,25

33B2

0,30 to 0,35

0,30

0,60 to 0,90

0,025

0,30

—

0,0008 to 0,005

0,25

38B2

0,35 to 0,40

0,30

0,60 to 0,90

0,025

0,30

—

0,0008 to 0,005

0,25

23MnB3

0,21 to 0,25

0,15

0,80 to 1,00

0,015

0,25 to 0,35

—

0,0008 to 0,005

0,25

17MnB4

0,15 to 0,20

0,30

0,90 to 1,20

0,025

0,30

—

0,0008 to 0,005

0,25

20MnB4

0,18 to 0,23

0,30

0,90 to 1,20

0,025

0,30

0,0008 to 0,005

0,25

23MnB4

0,20 to 0,25

0,30

0,90 to 1,20

0.025

0,025

0,30

—

0,0008 to 0,005

0,25

27MnB4

0,25 to 0,30

0,30

0,90 to 1,20

0,025

0,30

—

0,0008 to 0,005

0,25

30MnB4

0,27 to 0,32

0,30

0,80 to 1,10

0,025

0,30

—

0,0008 to 0,005

0,25

36MnB4

0,33 to 0,38

0,30

0,80 to 1,10

0,025

0,30

—

0,0008 to 0,005

0,25

20MnB5

0,17 to 0,23

0,30

1,10 to 1,40

0,025

0,30

—

0,0008 to 0,005

0,25

23MnB5

0,20 to 0,26

0,30

1,10 to 1,40

0,025

0,30

—

0,0008 to 0,005

0,25

26MnB5

0,23 to 0,29

0,30

1,20 to 1,50

0,025

0,30

—

0,0008 to 0,005

0,25

34MnB5

0,31 to 0,37

0,30

1,20 to 1,50

0,025

0,30

—

0,0008 to 0,005

0,25

37MnB5

0,35 to 0,40

0,30

1,15 to 1,45

0,025

0,30

—

0,0008 to 0,005

0,25

30MoB1

0,28 to 0,32

0,30

0,80 to 1,00

0,025

0,30e

0,08 to 0,12

0,0008 to 0,005

0,25

provided that they do not exceed 0,01 %for carbon and the values indicated in Table 2 for the other elements.

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 b

Maximum values unless otherwise indicated. In the case of steels with hardenability requirements (see Table C.8),minor deviations from the specified limits are permitted (with the exception of sulfur and phosphorus) c Lower silicon contents may be agreed at the time of ordering,in which case due consideration should be given to the effects that could result for what concerns the specified properties such as,for example,hardenability. d Where a maximum chromium content of 0,30 %is specified,a minimum level may also be agreed at the time of enquiry and order e In order to obtain a core hardening for the steel grade 30MoB1,the lower limit of Cr shall be 0,15 %and may be agreed at the time of enquiry and order.For certain applications, the higher limit for Cr may also be lowered by agreement at time of enquiry and order.

3.力学性能

表C.5 -不含B合金钢牌号的机械性能

Steel name	Diameter		Delivery condition
	Diameter		+AC or +AC+PE		+AC+C+AC		+AC+C+AC+LC
	above mm	up to mm	Rm max. MPa	Z min %	Rm max. MPa	Z min. %	Rm max. MPa	Z min. %
37Mo2	2	5			560	61	600	59
37Mo2	5	40	570	59	550	61	590	59
38Cr2	2	5			590	62	630	60
38Cr2	5	40	600	60	580	62	620	60
46Cr2	2	5			610	60	650	58
46Cr2	5	40	620	58	600	60	640	58
34Cr4	2	5	—	—	570	64	610	62
34Cr4	5	40	580	62	560	64	600	62
37Cr4	2	5			580	62	620	60
37Cr4	5	40	590	60	570	62	610	60
41Cr4 41CrS4	2	5	—	—	610	60	650	58
41Cr4 41CrS4	5	40	620	58	600	60	640	58
25CrMo4 25CrMoS4	2	5			570	62	610	60
25CrMo4 25CrMoS4	5	40	580	60	560	62	600	60
34CrMo4	2	5	—	—	590	62	630	60
34CrMo4	5	40	600	60	580	62	620	60
37CrMo4	2	5			610	62	650	60
37CrMo4	5	40	620	60	600	62	640	60
42CrMo4 42CrMoS4	2	5			620	60	660	58
42CrMo4 42CrMoS4	5	40	630	58	610	60	650	58
41CrNiMo2 41CrNiMoS2	2	5	—	—	640	60	680	55
41CrNiMo2 41CrNiMoS2	5	40	——	——	640	60	680	55
34CrNiMo6	2	5	——	——	710	60	750	58
34CrNiMo6	5	40	720	58	700	60	740	58
41NiCrMo7-3-2	2	5	—	—	710	60	750	58
41NiCrMo7-3-2	5	40	720	58	700	60	740	58

4.硬化性要求

表C.7-具有指定（正常）硬化性（+H级）的不含B钢牌号的硬度极限

Steel name	Sym- bol	Austenitizing temperature °℃±5℃	Limits of range	Hardness HRC at a distance from quenched end of test piece(in mm) of
Steel name	Sym- bol	Austenitizing temperature °℃±5℃	Limits of range	1	2	3	4	5	6	7	8	9	10	11	13	15	20	25	30
C35EC	+H	870	max.	58	57	55	53	49	41	34	31	28	27	26	25	24	23	20	—
C35RC	+H	870	min.	48	40	33	24	22	20		一				—				—
C45EC	+H	850	max.	61	60	59	57	53	47	39	34	31	30	29	28	27	26	25	24
C45RC	+H	850	min	51	46	35	27	25	24	23	22	21	20	—	—	—		—	—
				at a distance from quenched end of test piece(in mm) of
				1,5	3	5	7	9	11	13	15	20	25	30	35	40	45	50
37Mo2	+H	850	max.	59	57	53	47	41	36	32	29	27	25		—		—	—	—
37Mo2	+H	850	min.	51	48	41	33	27	26	22	20			一
38Cr2	+H	850	max.	59	57	54	49	43	39	37	35	32	30	27	25	24	23	22	—
38Cr2	+H	850	min.	51	46	37	29	25	22	20					—
46Cr2	+H	850	max.	63	61	57	52	46	42	40	38	35	33	31	29	28	27	26
46Cr2	+H	850	min	54	49	40	32	28	25	23	22	20	—
34Cr4	+H	850	max.	57	57	56	54	52	49	46	44	39	37	35	34	33	32	31
34Cr4	+H	850	min.	49	48	45	41	35	32	29	27	23	21	20	—	—
37Cr4	+H	850	max.	59	59	58	57	55	52	50	48	42	39	37	36	35	34	33	—
37Cr4	+H	850	min.	51	50	48	44	39	36	33	31	26	24	22	20
41Cr4	+H	850	max.	61	61	60	59	58	56	54	52	46	42	40	38	37	36	35
41CrS4	+H	850	min,	53	52	50	47	41	37	34	32	29	26	23	21	—	—
25CrMo4	+H	850	max.	52	52	51	50	48	46	43	41	37	35	33	32	31	31	31
25CrMoS4	+H	850	min.	44	43	40	37	34	32	29	27	23	21	20	—	—		一	—
34CrMo4	+H	850	max.	57	57	57	56	55	54	53	52	48	45	43	41	40	40	39
34CrMo4	+H	850	min.	49	49	48	45	42	39	36	34	30	28	27	26	25	24	24	—
37CrMo4	+H	850	max	60	60	60	59	58	56	55	54	51	48	46	45				——
37CrMo4	+H	850	min.	52	50	49	47	45	43	40	37	34	32	31	30
42CrMo4	+H	850	max.	61	61	61	60	60	59	59	58	56	53	51	48	47	46	45
42CrMoS4	+H	850	min	53	53	52	51	49	43	40	37	34	32	31	30	30	29	29