Mecasteel™ 145

Prehardened engineering steel

Mecasteel 145 is a steel grade delivered in prehardened condition (YS ≥ 145 ksi – 1000 MPa) and available in a very large dimensional program (width 78“~ 2 m thickness up to 25” – 630 mm).

It can be used in substitution to conventional steels, such as AISI 4330 for example in the manufacture of massive steel components (machines, hydraulic systems, frac pumps…).

Its original chemistry and heat treatment process enable to obtain in delivery condition very consistent mechanical properties throughout the whole blocks, even for the heaviest gauge.

Consequently, this material doesn’t need any further hardening after machining, allowing substantial cost savings. Although it is delivered in prehardened condition, Mecasteel 145 provides good and consistant machinability.

Its chemistry is designed to combine high tensile properties together with very good toughness to prevent components from cracks and failure.

Chemical analysis

Typical values (weight%).

C S max P max Si max Mn max Cr Ni Mo V Other
0.25 – 0.30 0.010 0.010 0.25 0.5 1.0 – 1.5 3.0 – 3.5 0.6 – 0.9 0.08 – 0.12 B

Guaranteed mechanical properties

Guaranteed hardness 350 – 390 HB

Tensile properties

  YS 0.2 UTS Elongation
(%)
Red of area
(%)
KSI >= 145 >= 160 >=15 >=35
MPa >= 1000 >= 1103

Guaranteed values in length and transverse direction. Sampling according to API 16A, on a QTC (Qualification Test Coupon) or a prolongation at 2.0“ (50.8 mm) from the skin of the solid block.

Impact properties

 
  Longitudinal Transverse
Individual Average Individual Average
Ft.lb > 20 > 25 > 20 > 25
J > 27 > 34 > 27 > 34

Typical mechanical properties

Hardness typical value: 360 HB.

Tensile properties

Typical value measured on a block 23.6“(600 mm) thick.

  YS 0.2
Ksi (MPa)
UTS
KSI (-MPa)
Elongation
(%)
Red of area
(%)
Lengh
direction
-2.0″
below skin
152.5 (1051) 164.3 (1132) 16 51
1/4 th. 146.2 (1007) 162.8 (1122) 15 42
Transverse
direction
-2.0″
below skin
154.1 (1062) 165.3 (1139) 16 49
1/4 th. 146.4 (1009) 163.3 (1125) 14 39

Impact properties

Value measured on a QTC 12“ x 6“ x 24“

Average of 3 specimens J (ft.lb)
  24°C/75°F -40°C/-40°F
Lengh
direction
Skin (-50mm/2″) 73 (54)  
1/4 th. 64 (47)  
Transverse
direction
Skin (-50mm/2″) 62 (46) 62 (46)
1/4 th. 58 (43) 56 (41)

For more technical details :

 

Mecasteel™ 145

Download the complete datasheet


Technical data and information are to the best of our knowledge at the time of publication. However, they may be subjected to some slight variations due to our ongoing research programmes. Therefore, we suggest that information be verified at time of enquiry or order. Furthermore, in service, real conditions are specific for each application. The data presented here are for the purpose of description only, and can be considered as guarantees only when written formal approval has been provided by our company. Industeel reserves the right to change its product range at any time without prior notice.