Mecasteel™ 75

Prehardened forged rolled steel

Mecasteel 75 is a steel grade delivered in prehardened condition (YS ≥ 75 ksi – 517 MPa) and available in a very large dimensional program (width 78“~ 2 m, thickness up to 37.4” – 950 mm).

It can be used in substitution to conventional steels, such as AISI 4130 or F22 for example in the manufacture of massive steel components (machines, hydraulic systems…). 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 gage.

Consequently, and unlike 4130 type steels, this material doesn’t need any further hardening after machining, allowing substantial cost savings. Although it is delivered in prehardened condition, Mecasteel 75 provides outstanding machinability. Its low carbon leads also to excellent weldability and toughness compared to conventional steels.

Mecasteel 75 steel is suitable for sour gas service (H2S environment)

Chemical analysis

Typical values (weight%).

C S max P max Cr Mn Boron max
0.23 – 0.28 0.010 0.01 1.2 – 1.6 1.2 – 1.6 0.003

Guaranteed mechanical properties

Maximum hardness 237 HB.

Tensile properties

YS 0.2 UTS Elongation
(%)
Red of area
(%)
ksi >= 75 >= 95 >=18 >=35
MPa >= 517 >= 655

Typical mechanical properties

Hardness typical value: 225 HB.

Tensile properties

YS 0.2
Ksi (MPa)
UTS
KSI (-MPa)
Elongation
(%)
Red of area
(%)
Lengh
direction
Skin -2.5″ 80.1 (552) 103.6 (714) 26 68
1/4 th. 76.9 (530) 101.4 (699) 24 62
1/2 th. 77.6 (535) 102.5 (707) 24 65
Transverse
direction
Skin -2.5″ 79.8 (550) 102.8 (709) 26 65
1/4 th. 77.3 (533) 101.2 (698) 24 58
1/2 th. 78.3 (540) 103.0 (710) 25 63

Delivery conditions

Manufacturing program. Prehardened: Normalized, quenched and tempered.

Thicknesses Widths
from 5″ to 37.4″ from 40″ to 80″
from 127 mm to 950 mm from 1016 mm to 2032 mm

For more technical details

 

Mecasteel™ 75

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.