Wire and wire rods in carbon steel for fastener production

Chemical analysis Chemische Analyse Analisi chimiche
Type	Din	Chemical composition
		C		MN		Si	S		P	Cr		Mo		Al		B
		Min.	Max.	Min.	Max.	Max	Min.	Max.	Max.	Min.	Max.	Min.	Max.	Min.	Max.	Min.	Max.
Alloyed steels	25CrMo4	0.22	0.29	0.60	0.90	0.30		0.025	0.025	0.90	1.20	0.15	0.30
	34CrMo4	0.32	0.36	0.60	0.90	0.30		0.025	0.025	0.90	1.20	0.15	0.25
	34Cr4	0.34	0.38	0.65	0.80	0.30		0.025	0.025	0.90	1.20
	37Cr4	0.36	0.40	0.75	0.90	0.30		0.025	0.025	1.05	1.20
	41Cr4	0.38	0.43	0.65	0.90	0.30		0.025	0.025	0.90	1.20
	42CrMo4	0.40	0.44	0.65	0.90	0.30		0.025	0.025	0.90	1.20	0.15	0.35
		0.40	0.45	0.60	0.90	0.30	0.020	0.040	0.025	0.90	1.20
	42CrMoS4	0.40	0.45	0.65	0.90	0.20	0.020	0.035	0.025	0.90	1.20	0.15	0.30
Carbon steels	RST 36-2	0.06	0.10	0.25	0.50	0.30		0.030	0.030
	QST 32-3		0.06	0.20	0.40	0.10		0.030	0.030					0.020	0.050
	CQ-10	0.05	0.08	0.25	0.45	0.10		0.030	0.030					0.020	0.060
	QST 36-3	0.08	0.13	0.35	0.60	0.10		0.030	0.030					0.020	0.060
	CQ22	0.18	0.24	0.30	0.60	0.20		0.030	0.030					0.015	0.060
	CQ15	0.15	0.18	0.30	0.65	0.10		0.030	0.030					0.020	0.060
		0.17	0.20	0.70	0.90	0.10		0.030	0.030					0.020	0.060
	K50	0.45	0.50	0.50	0.70	0.30		0.030	0.030					0.015	0.060
	CQ45	0.42	0.50	0.50	0.80	0.20		0.030	0.030
	CQ45	0.44	0.48	0.50	0.80	0.12	0.015	0.035	0.030
Boron steels		0.16	0.20	0.70	0.90	0.10		0.025	0.025							0.0020	0.0060
	22B2	0.19	0.24	0.50	0.80	0.20		0.025	0.025							0.0020	0.0060
	19 MnB4	0.19	0.23	0.80	1.00	0.15		0.025	0.025							0.0020	0.0060
	28B2	0.26	0.30	0.70	1.00	0.20		0.025	0.025							0.0010	0.0060
	35B2	0.32	0.38	0.50	0.80	0.20		0.025	0.025							0.0010	0.0060
		0.38	0.42	0.85	1.05	0.25		0.025	0.025							0.0010	0.0060

Mechanical properties Mechanische Eigenschaften Proprietà meccaniche
Type	Din	Rm(N/mm2)			Thermic treatment			Applications
		Process
		KRG	KGK	RGK	Type	°C	Cooling	Tensile
Alloyed steels	25CrMo4	580	560	600
	34CrMo4	600	580	620	hardened and tempered	850	oil	10.9/12.9
	34Cr4	580	560	600	hardened and tempered	850	oil	10.9/12.9
	37Cr4	590	570	610	hardened and tempered	850	oil	10.9
	41Cr4	620	600	640	hardened and tempered	850	oil	10.9
	42CrMo4	630	610	650	hardened and tempered	850	oil	Lozenges
		620	600	640	hardened and tempered	850	oil	Stamp and mechanizes
	42CrMoS4	630	610	650	hardened and tempered	850	oil	Stamp and mechanizes
Carbon steels	RST 36-2
	QST 32-3	460	350	400				Semitubular pieces
	CQ-10	480	380	440	casehardening			4.6/4.8
	QST 36-3	510	400	460				4.6/4.8
	CQ22				casehardening	880	water/polymers	5.6/5.8/5.9/6.0/6.8
	CQ15	540	420	480	casehardening	900	water/polymers
		640	500	560	casehardening	890	oil
	K50				hardened	870	oil	Steel nails
	CQ45	580	620	710	hardened	860	oil	Mechanical nails
	CQ45				hardened	860	oil	Mechanized
Boron steels		440	480	540	carbonitrided	880	oil
	22B2	450	490	550	hardened and tempered	890	oil	8.8
	19 MnB4	470	500	560	hardened and tempered	890	oil	8.8/9.8
	28B2	500	540	600	hardened and tempered	890	oil	8.8/9.8/10.9
	35B2	520	560	620	hardened and tempered	860	oil	8.8/9.8/10.9
		540	580	640	hardened and tempered	860	oil	8.8/9.8/10.9