GENERAL SCOPE
F22 is a low alloy steel predominately used in wellhead applications as an upgrade over AISI 4130. It is a very deep hardening, heat treatable alloy steel.
CHEMICAL COMPOSITION
|
|
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Ni |
Al |
Cu |
Sn |
|
Min |
0.10 |
0.15 |
0.30 |
|
|
2.0 |
0.87 |
|
|
||
|
Max |
0.15 |
0.50 |
0.60 |
0.015 |
0.025 |
2.50 |
1.13 |
0.50 |
0.05 |
0.25 |
0.10 |
MECHANICAL PROPERTIES
|
Annealed - suitable for further heat treatment to below requirements. |
|||||
|
80 KSI Min |
105 KSI Min |
ASTM A182 Class 3 |
|||
|
UTS |
100 KSI Min |
UTS |
120 KSI Min |
UTS |
75 KSI Min |
|
0.2% Proof Stress |
80 KSI Min |
0.2% Proof Stress |
105 KSI Min |
0.2% Proof Stress |
45 KSI Min |
|
Elongation |
18.00% |
Elongation |
18.00% |
Elongation |
20.00% |
|
Red of Area |
35.00% |
Red of Area |
35.00% |
Red of Area |
30.00% |
|
Hardness |
217/237 |
Hardness |
262/321 |
Hardness |
156/207 |
SURFACE CONDITION Peeled/smooth turned bar.
REDUCTION RATIO 4:1 Min
STRUCTURE Grain size will be ASTM 5 or finer.
ULTRASONIC EXAMINATION Ultrasonic examination available per ASTM A388/API6A Latest Edition
STOCK RANGE
Rolled / Peeled Bar Suitable for heat treatment. 76.2mm – 230mm ⌀
Forged Annealed Bar Suitable for heat treatment. 254mm – 609.6mm ⌀