CARBON STEEL HANDBOOK

Carbon steel is a malleable, iron-based metal containing less than 2% carbon (usually less than 1%), small amounts of manganese, and other trace elements. Steels can either be cast to shape or wrought into various mill forms from which finished parts are formed, machined, forged, stamped, or otherwise shaped. Carbon steels are specified by chemical composition, mechanical properties, method of deoxidation, or thermal treatment.

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Key words: CARBON STEEL HANDBOOK, MANUEL EN ACIER AU CARBONE, KARBONSTAHL HANDBUCH, 탄소강 수첩, MANUALE IN ACCIAIO AL CARBONIO, 炭素鋼ハンドブック, 碳钢手册, الكربون الصلب كتيب

Carbon Steel for Machine Structural Use

Content:

1. End applications

2. Chemical Composition

3. Mechanical properties(hot rolled)

4. Mechanical properties(cold rolled)

Chemical Composition

JIS	SAE	Nisshin Standard	Chemical Composition(%)
			C	Si	Mn	P	S
S09CK			0.07~0.12	0.10~0.35	0.30~0.60	0.025max	0.025max
S10C			0.08~0.13	0.15~0.35	0.30~0.60	0.030max	0.035max
S12C			0.10~0.15	0.15~0.35	0.30~0.60	0.030max	0.035max
		N15CK	0.10~0.15	0.15~0.35	0.30~0.60	0.025max	0.025max
S15CK			0.13~0.18	0.15~0.35	0.30~0.60	0.025max	0.025max
	SAE1015		0.13~0.18	0.15~0.30	0.30~0.60	0.040max	0.050max
S15C			0.13~0.18	0.15~0.35	0.30~0.60	0.030max	0.035max
	SAE1018		0.15~0.20	0.15~0.30	0.60~0.90	0.030max	0.050max
	SAE1019		0.15~0.20	0.15~0.30	0.70~1.00	0.030max	0.050max
S17C			0.15~0.20	0.15~0.35	0.30~0.60	0.030max	0.035max
	SAE1020		0.18~0.23	0.15~0.30	0.30~0.60	0.030max	0.050max
	SAE1022		0.18~0.23	0.15~0.30	0.70~1.00	0.030max	0.050max
S20C			0.18~0.23	0.15~0.35	0.30~0.60	0.030max	0.035max
S20CK			0.18~0.23	0.15~0.35	0.30~0.60	0.025max	0.025max
	SAE1023		0.20~0.25	0.15~0.30	0.30~0.60	0.040max	0.050max
S22C			0.20~0.25	0.15~0.35	0.30~0.60	0.030max	0.035max
S25C			0.22~0.28	0.15~0.35	0.30~0.60	0.030max	0.035max
S28C			0.25~0.31	0.15~0.35	0.60~0.90	0.030max	0.035max
S30C			0.27~0.33	0.15~0.35	0.60~0.90	0.030max	0.035max
	SAE1030		0.28~0.34	0.15~0.30	0.60~0.90	0.030max	0.050max
S33C			0.30~0.36	0.15~0.35	0.60~0.90	0.030max	0.035max
	SAE1035		0.32~0.38	0.15~0.30	0.60~0.90	0.030max	0.050max
S35C			0.32~0.38	0.15~0.35	0.60~0.90	0.030max	0.035max
S38C			0.35~0.41	0.15~0.35	0.60~0.90	0.030max	0.035max
	SAE1040		0.37~0.44	0.15~0.30	0.60~0.90	0.030max	0.050max
S40C			0.37~0.43	0.15~0.35	0.60~0.90	0.030max	0.035max
S43C			0.40~0.46	0.15~0.35	0.60~0.90	0.030max	0.035max
S45C			0.42~0.48	0.15~0.35	0.60~0.90	0.030max	0.035max
	SAE1045		0.43~0.50	0.15~0.30	0.60~0.90	0.030max	0.050max

JIS	SAE	Nisshin Standard	Chemical Composition(%)
			C	Si	Mn	P	S
		N45B	0.43~0.50	0.15~0.30	0.40~0.65	0.030max	0.035max
		NCL1	0.45~050	0.15~0.30	0.60~0.90	0.035max	0.040max
S48C			0.45~0.51	0.15~0.35	0.60~0.90	0.030max	0.035max
S50C			0.47~0.53	0.15~0.35	0.60~0.90	0.030max	0.035max
		N50S	0.45~0.55	0.15~0.35	0.60~0.90	0.030max	0.035max
	SAE1050		0.48~0.55	0.15~0.30	0.60~0.90	0.030max	0.050max
		N50B	0.48~0.55	0.15~0.30	0.40~0.65	0.030max	0.035max
S53C			0.50~0.56	0.15~0.35	0.60~0.90	0.030max	0.035max
		NU52	0.50~0.58	0.15~0.35	0.60~0.90	0.030max	0.035max
S55C			0.52~0.58	0.15~0.35	0.60~0.90	0.030max	0.035max
		N55D	0.52~0.58	0.10max	0.60~0.90	0.030max	0.035max
	SAE1055		0.50~0.60	0.15~0.30	0.60~0.90	0.030max	0.050max
S58C			0.55~0.61	0.15~0.35	0.60~0.90	0.030max	0.035max
	SAE1060		0.55~0.65	0.15~0.30	0.60~0.90	0.030max	0.050max
		N60C	0.55~0.65	0.15~0.30	0.60~0.90	0.030max	0.035max
	SAE1064		0.60~0.70	0.15~0.30	0.50~0.80	0.030max	0.050max
	SAE1065		0.60~0.70	0.15~0.30	0.60~0.90	0.030max	0.050max
		N63C	0.60~0.65	0.15~0.30	0.70~0.90	0.030max	0.035max
		N65C	0.60~0.70	0.15~0.30	0.60~0.90	0.030max	0.035max
	SAE1566		0.60~0.71	0.15~0.30	0.85~1.15	0.030max	0.050max
		N66C	0.62~0.70	0.17~0.37	0.90~1.20	0.030max	0.035max
		N70C	0.65~0.75	0.15~0.30	0.60~0.90	0.030max	0.035max
		NK11	0.65~0.75	0.35max	0.50~0.80	0.030max	0.030max
	SAE1070		0.65~0.75	0.15~0.30	0.60~0.90	0.030max	0.050max
	SAE1074		0.70~0.80	0.15~0.30	0.50~0.80	0.030max	0.050max
		N75C	0.70~0.80	0.15~0.30	0.60~0.90	0.030max	0.035max
	SAE1075		0.70~0.80	0.15~0.30	0.40~0.70	0.030max	0.050max
	SAE1080		0.75~0.88	0.15~0.30	0.60~0.90	0.030max	0.050max
		N85C	0.80~0.90	0.15~0.30	0.70~1.00	0.030max	0.035max
	SAE1085		0.80~0.93	0.15~0.30	0.70~1.00	0.030max	0.050max
	SAE1090		0.85~0.98	0.15~0.30	0.60~0.90	0.030max	0.050max

Mechanical properties(hot rolled)

	Type of steel	Hot-rolled hardness (HRB)	Hardening				Tempering			Annealed hardness (HRB)
			Water quenched 3.15mm max		Oil quenched below 3.15mm		Temperature(℃)	Hardness(HRC)
			Temperature (℃)	Hardness (HRC)	Temperature (℃)	Hardness (HRC)		Water quenched	Oil quenched
J I S	S10C	76 max	-	-	-	-	-	-	-	-
	S12C	81 max	-	-	-	-	-	-	-	-
	S15C	83 max	-	-	-	-	-	-	-	-
	S17C	85 max	-	-	-	-	-	-	-	-
	S20C	86 max	-	-	-	-	-	-	-	-
	S22C	88 max	-	-	-	-	-	-	-	-
	S25C	90 max	-	-	-	-	-	-	-	-
	S28C	91 max	-	-	-	-	-	-	-	-
	S30C	93 max	850~900	46 min	-	-	150~200 air cooled	42 min	-	85 max
	S33C	97 max	840~890	46 min	-	-	150~200 air cooled	42 min	-	85 max
	S35C	98 max	840~890	46 min	-	-	150~200 air cooled	43 min	-	88 max
	S38C	99 max	830~880	46 min	-	-	150~200 air cooled	43 min	-	88 max
	S40C	99 max	830~880	53 min	830~880	51 min	150~200 air cooled	47 min	45 min	90 max
	S43C	100 max	820~870	53 min	830~880	51 min	150~200 air cooled	47 min	45 min	90 max
	S45C	101 max	820~870	53 min	830~880	51 min	150~200 air cooled	50 min	45 min	91 max
	S48C	102 max	810~860	55 min	810~860	53 min	150~200 air cooled	50 min	48 min	91 max
	S50C	104 max	810~860	55 min	810~860	53 min	150~200 air cooled	50 min	48 min	92 max
	S53C	106 max	800~850	55 min	810~860	53 min	150~200 air cooled	50 min	48 min	92 max
	S55C	107 max	800~850	55 min	810~860	53 min	150~200 air cooled	52 min	50 min	93 max
	S58C	108 max	800~850	58 min	800~850	56 min	150~200 air cooled	52 min	50 min	93 max
	S09CK (S9CK)	76 max	-	-	-	-	-	-	-	-
	S15CK	83 max	-	-	-	-	-	-	-	-
	S20CK	86 max	-	-	-	-	-	-	-	-

	Type of steel	Hot-rolled hardness	Hardning				Tempering			Annealed hardness (HRB)
			Water quenched 3.15mm max		Oil quenched below3.15mm		Temperature(℃)	Hardness(HRC)
			Temperature (℃)	Hardness (HRC)	Temperature (℃)	Hardness (HRC)		Water quenched	Oil quenched
S A E	SAE1015	HRB85 max	-	-	-	-	-	-	-	-
	SAE1018	HRB90 max	-	-	-	-	-	-	-	-
	SAE1019	HRB90 max	-	-	-	-	-	-	-	-
	SAE1020	HRB86 max	-	-	-	-	-	-	-	-
	SAE1022	HRB93 max	-	-	-	-	-	-	-	-
	SAE1023	HRB88 max	-	-	-	-	-	-	-	-
	SAE1030	HRB98 max	850~900	45 min	-	-	150~200 air cooled	42 min	-	86 max
	SAE1035	HRB99 max	850~900	46 min	-	-	150~200 air cooled	43 min	-	88 max
	SAE1040	HRB100 max	820~870	53 min	830~880	51 min	150~200 air cooled	47 min	45 min	90 max
	SAE1045	HRB104 max	820~870	56 min	830~880	54 min	150~200 air cooled	47 min	45 min	91 max
	SAE1050	HRB107 max	810~860	56 min	810~860	54 min	150~200 air cooled	50 min	48 min	92 max
	SAE1055	HRB108 max	800~850	56 min	810~860	54 min	150~200 air cooled	50 min	48 min	93 max
	SAE1060	HRC34 max	760~820	59 min	790~850	57 min	150~200 air cooled	54 min	52 min	94 max
	SAE1064	HRC35 max	760~820	59 min	780~840	57 min	150~200 air cooled	54 min	52 min	94 max
	SAE1065	HRC35 max	760~820	59 min	780~840	57 min	150~200 air cooled	54 min	52 min	94 max
	SAE1566	HRC38 max	790~850	59 min	780~840	57 min	150~200 air cooled	54 min	52 min	97 max
	SAE1070	HRC37 max	760~820	59 min	780~840	57 min	150~200 air cooled	56 min	54 min	96 max
	SAE1074	HRC38 max	760~820	59 min	780~840	57 min	150~200 air cooled	56 min	54 min	96 max
	SAE1075	HRC38 max	760~820	59 min	780~840	57 min	150~200 air cooled	56 min	54 min	96 max
	SAE1080	HRC40 max	760~820	62 min	780~840	60 min	150~200 air cooled	58 min	58 min	96 max
	SAE1085	HRC42 max	760~820	62 min	770~830	60 min	150~200 air cooled	59 min	59 min	97 max
	SAE1090	HRC43 max	760~820	62 min	770~830	60 min	150~200 air cooled	59 min	59 min	97 max

	Type of steel	Hot-rolled hardness	Hardening				Tempering			Annealed hardness (HRB)
			Water quenched 3.15mm max		Oil quenched below3.15mm		Temperature (℃)	Hardness(HRC)
			Temperature (℃)	Hardness (HRC)	Temperature (℃)	Hardness (HRC)		Water quenched	Oil quenched
Nisshin Standard	N45B	HRB102 max	820~870	53 min	830~880	51 min	150~200 air cooled	50 min	45 min	91 max
	N50B	HRB108 max	800~850	56 min	810~860	54 min	150~200 air cooled	54 min	52 min	92 max
	N60C	HRC 34 max	760~820	58 min	790~820	56 min	150~200 air cooled	54 min	52 min	94 max
	N63C	HRC 34 max	760~820	58 min	780~840	56 min	150~200 air cooled	54 min	52 min	94 max
	N65C	HRC 35 max	760~820	58 min	780~840	56 min	150~200 air cooled	54 min	52 min	94 max
	N66C	HRC 38 max	760~820	58 min	780~840	56 min	150~200 air cooled	54 min	52 min	97 max
	N70C	HRC 37 max	760~820	58 min	780~840	56 min	150~200 air cooled	54 min	52 min	96 max
	N75C	HRC 38 max	760~820	58 min	780~840	56 min	150~200 air cooled	54 min	52 min	96 max
	N85C	HRC 42 max	760~820	61 min	770~830	59 min	150~200 air cooled	59 min	58 min	97 max
	N15CK	HRB 81 max	-	-	-	-	-	-	-	-
	NCL1	HRB102 max	800~850	56 min	810~860	54 min	550~650 air cooled	14 min	14 min	91 max
	NU52	HRB105 max	800~850	56 min	810~860	54 min	150~200 air cooled	50 min	48 min	92 max
	N50S	HRB108 max	800~850	56 min	810~860	54 min	150~200 air cooled	54 min	52 min	91 max
	NK11	HRC 37 max	760~820	58 min	780~840	56 min	150~200 air cooled	56 min	54 min	94 max
	N55D	HRB107 max	810~850	55 min	820~860	53 min	150~200 air cooled	52 min	50 min	93 max

Mechanical properties(cold rolled)

Type of steel		Annealing Hardness		Deep-Drawing Hardness
		Standard	Special
		HV	HV	HV
J I S	S15C	≦140	≦130	150~180
	S20C	≦150	≦140	150~180
	S25C	≦150	≦140	150~180
	S30C	≦150	≦140	150~180
	S35C	≦150	≦140	160~240
	S40C	≦150	≦140	160~240
	S45C	≦160	≦150	170~240
	S50C	≦160	≦150	180~260
	S55C	≦170	≦160	180~260
	S60C	≦170	≦160	180~280
	S65C	≦170	≦160	180~280
	S70C	≦180	≦170	180~280
	S75C	≦180	≦170	180~280
S A E	SAE1050	≦160	≦150	180~260
	SAE1055	≦170	≦160	180~260
	SAE1060	≦170	≦160	180~280
	SAE1070	≦180	≦170	180~280
	SAE1080	≦180	≦170	180~280
Nisshin Standard	N63C	≦170	≦160	180~280
	N70C	≦180	≦170	180~280
	N55D	≦160	≦150	-

Source: tenhiko.com