C45M2H C45M2 C45M2HH4 - ISO 683-1-1987

Grade	C45M2H
Other Names
Corresponding Standard	ISO 683-1-1987 Heat-Treatable Steels,alloy Steels and Free-Cutting Steels. Part 1:Direct-Hardening Unalloyed and Low-Alloyed Wrought Steel in Form of Different Black Produts
Classification	Carbon Steel

C45M2H Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S
Minimum Value	0.42	0.1	0.5	-	0.02
Maximum Value	0.5	0.4	0.8	0.035	0.04

• The designations are in accordance with the system proposed by ISO/TC 17/SC 2.
• Elements not quoted should not be intentionally added to the steel without the agreement of the purchaser, other than for the purpose of finishing the heat. All reasonable precautions should be taken to prevent the addition, from scrap or other material used in manufacture, of such elements which affect the hardenability, mechanical properties and applicability.
• In the case of the grades with specified hardenability requirements (see tables 5 to 7), except for phosphorous and sulfur, insignificant deviations from the limits for cast analysis are permissible; these deviations shall, however, not exceed in the case of carbon ± 0,01 % (m/m) and in all other cases the values according to table 4.
• For boron-treated steels, see ISO 4954.
• Steels with improved machinability by either lead additions or higher sulfur levels up to about 0,100 % (m/m) S (including controlled sulfide morphology) may be available on request.

C45M2H Mechanical Properties

diameter d mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Impact Energy Absorption KV2 J
d≤16	Quenching + Tempering	700~850	≥490	≥14	KU: ≥20
16＜d≤40	Quenching + Tempering	650~800	≥430	≥16	KU: ≥20
40＜d≤63	Quenching + Tempering	630~780	≥370	≥17	KU: ≥20

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!