中文版
Home Material NF A 35-557-1983
简体 | 繁體
Grade 42CD 4
Corresponding Standard NF A 35-557-1983
Iron And Steel — Heat Treatable Steels for Externally Threaded, High Performance Fasteners for Engineering Purposes.
Classification Alloy Steel
Properties Strength
42CD 4 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Mo
Minimum Value 0.39 0.1 0.6 - - 0.9 0.15
Maximum Value 0.45 0.4 0.9 0.035 0.035 1.2 0.25
42CD 4 Mechanical Properties
condition Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Hardness
HBW 		Impact Energy Absorption
KV2
J
Bar, coil; d = 30 Oil Quenching - - - HR
48		 -
Bar, Coil; d=50 Oil Quenching - - - 45 -
Bar, Coil; d=60 Oil Quenching - - - 42 -
Bar, Coil; d≤30 Quenching and Tempering 1180~1380 ≥950 ≥8 - Charpy U Notch
≥30
Bar, Coil; 30<d≤50 Quenching and Tempering 1080~1280 ≥870 ≥9 - ≥30
Bar, Coil; 50<d≤60 Quenching and Tempering 1000~1180 ≥820 ≥10 - ≥40
1 Approximate Comparison Table Structural Alloy Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Sweden United Kingdom
GB ISC CNS JIS KS ASTM/AISI UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade SS14 BS EN/BS
42CrMo A30422 SCM440 SCM440
SCM440H 		SCM440 4140
4142 		G41400
G41420 		42CrMo4 42CrMo4 1.7225 42CD4 42CrMo4 1.7225 2244 708M40
2 Approximate Comparison Table Cold Heading Steel
China United States International Organization for Standardization Germany France
GB ISC ASTM/AISI UNS ISO DIN EN/DIN W-Nr. NF EN/NF
ML42CrMo A30424 4140
A320ML7M 		G41400 42CrMo4E
(C32) 		42CrMo4 1.7225 42CD4
3 Approximate Comparison Table Structural Alloy Steel
China Japan United States International Organization for Standardization Germany France European Standard Russia Sweden United Kingdom
GB JIS ASTM ISO DIN EN/DIN NF EN/NF EN Numerical Grade GOST SS BS EN/BS
42CrMo SCM440H 4140
4142 		42CrMo4 42CrMo4 42CD4 42CrMo4 1.7225 35KHM
38KHM 		2244 708M40
CFS11
42CD4 Corresponding Standards(Same grade name, different standards)
1 NF A 35-557-1983
42CD 4
2 NF A 35-556-1984
42CD4
3 NF EN 10083-3-2006
(42CD4) 42CrMo4 1.7225
4 NF A 36-102-1993
(42 CD 4) 42CrMo4RR

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