| AISI
4130/4130 mod |
 |
 |
API mechanical properties may be obtained
on products beyond 5" |
|
|
H2S variant offering
hardness < 22 HRC |
|
|
good weldability |
|
|
Ca treated and degassed steel |
|
|
| AISI
4140 |
|
|
H2S
variant offering hardness < 22 HRC |
|
|
Ca treated and degassed steel |
|
|
| AISI
4145H mod |
|
|
very good inclusion cleanness conforming
to AMS 2301 |
|
|
Good machinability, particularly for drilling |
|
|
| AISI
4340 |
|
|
good compromise between strength and toughness |
|
|
excellent macro cleanness conforming to AMS 2304 |
|
|
|
|
| AISI
4330V mod |
|
|
very good strength and toughness including
at 2" below the surface |
|
|
Excellent macro cleanness conforming to AMS 2304 |
|
|
| EN30B |
|
|
Good impact strength at low temperatures |
|
|
Excellent macro cleanness conforming to AMS 2304 |
|
|
| AISI
410/420 |
|
|
H2S/CO2 corrosion resistance |
|
|
Excellent macro cleanness conforming to AMS 2304 |
|
|
|
