China High Tensile Hot Rolled 25mm Carbon Steel 90d S55c Round Bar Price

1. Grade:
(1) Carbon steel: Chinese Standard: 20#, 25#, 35#, 45#, 50#, 60#; Japan Standard: S20C, S25C, S35C, S45C, S55C, S60C; US Standard: AISI1020, AISI1040, AISI1045, AISI1050; Europe Standard: CK15, C. 22, C45, CK45, C60, CK60; C45E;
(2) Alloy Steel: Chinese Standad: 16Mn, 20Mn, 30Mn2, 30Mn5, 40Cr, Q345D, Q345E, Q390; 42CrMo, 20CrMo, 38CrMoAl, 40CrNiMo; 48CrMo, 5CrNiMo; Janpan Standard: SCM415, SCM420, SCM440, SNCM439, SNCM220; SACM645 USA Standard: SAE4140, SAE4130, SAE9840, SAE4340, AISI4145H, SAE4150, SAE8620.
(3) Europe Standard:
42CrMo4, 25CrMo4, 34CrNiMo6, 39CrNiMo3, 17NiCrMo6, 18CrNiMo7-6, S355J2G3, ASTM A105, ST52-3, 16MnCr5, 20MnCr5, 16MnCrS5, 20MnCrS5, 21CrMoV511, 56NiCrMoV7, 18NiCrMo5, 30CrNiMo8, 34NiCrMo16, 41CrAlNi7, 34CrAlNi7, B7, B16, F11, F12, F22, F5, F9, 51Cr4.
Surface Treatment: painting,plating,polishing,black oxide,transparent anti-rust oil
Heat treatment: Normalized / Annealed / Quenched / tempered
Product Advantages:
1) High strength
2) Good machining property
3) Good comprehensive property balance
Chemical composition:

C
Si
Mn
S
P
Cr
Cu
Ni
0.42~0.50
0.15~0.35
0.50~0.80
≤0.030
≤0.030
≤0.25
≤0.25
≤0.30

Application:
Foodstuff, gas, metallurgy, biology, electron, chemical, petroleum, boilers, nuclear, energy, construction field, ships building industry, war and electricity industry, boiler heat exchanger, machiner and hardware fields and medical equipment, fertilizer, etc.