1.7227 QT & 1.7225 QT €co-Präz^® flat steel without or with machining allowance - €co-Präz^®

WE ARE EXPANDING - GIVING YOU MORE FLEXIBILITY IN YOUR CHOICE

You already know our high-performance materials 1.7225 (42CrMo4) and 1.7227 (42CrMoS4) in annealed form.

As of now, we also offer these materials in a tempered finish.
(QT = Quenched and Tempered).

Physical differences

1.7225 / 1.7227
ANNEALED

Tensile strength:
max. 720 N/mm²

1.7225+QT / 1.7227+QT
TEMPERED

Tensile strength:
approx. 800-900 N/mm²
(round: max. 1300 N/mm²)

Chemical difference

1.7225 / 1.7225+QT
ANNEALED / TEMPERED

“Normal” CrMo heat-treatable steel.
Very low sulfur content. (typ. ≤ 0.035%)

1.7227 / 1.7227+QT
ANNEALED / TEMPERED

Specifically alloyed with sulfur
(typ. ≤ 0.020-0.040% S)

Effect of sulfur

Sulfur combines with manganese to form manganese sulfide inclusions (MnS).

These MnS inclusions act as predetermined breaking points for the chips in the microstructure.

Result:

Short, crumbly chips instead of long, tough ribbon chips.

Less chip winding, lower tool load, and easier to automate.

Advantages during machining

Significantly higher strength on delivery
often eliminates the need for further hardening.

High support hardness if the surface layer
is to be nitrided, e.g. due to edge wear.

1.7227 + QT with a defined sulphur
content also enables better machining

Availability from stock enables the fastest
possible completion of your components

Advantages of €co-Präz^®

Price advantage
Reduced processing costs compared to conventional precision flat steel

Tight tolerances
High dimensional accuracy in width and thickness

Good flatness
Minimized reworking effort

Clean surfaces
Ready for immediate use in tool and machine construction

1.7225

Discription: 42CrMo4
Condition: annealed
Tensile strength (N/mm²⁾: approx. 720
Hardness (HB): max. 217
Machinability: ⭐️⭐️⭐️⭐️★★

Typical applications:
starting material for shafts, gears, bolts (before tempering)

1.7225+QT

Discription: 42CrMo4+QT
Condition: quenched and tempered (QT)
Tensile strength (N/mm²⁾:
approx. 800-900 (flat) / max. 1300 (round)
Hardness (HB):
max. 270, tempered (flat) / max. 380, tempered (round)
Machinability: ⭐️⭐️⭐️★★★

Typical applications:
Heavily loaded machine components, e.g., guide rails, shafts, spindles, gears, spring-like applications

1.7227

Discription: 42CrMoS4
Condition: annealed
Tensile strength (N/mm²⁾: approx. 720
Hardness (HB): max. 217
Machinability: ⭐️⭐️⭐️⭐️⭐️★

Typical applications:
Starting material for parts
subject to high stress (befor tempering)

1.7227+QT

Discription: 42CrMoS4+QT
Condition: quenched and tempered (QT)
Tensile strength (N/mm²): approx. 800-900 (flat)
Hardness (HB): max. 270, tempered (flat)
Machinability: ⭐️⭐️⭐️⭐️★★

Typical applications:
Highly stressed shafts, spindles, gears, pring-like applications

Order online here - 1.7225+QT flat steel WITHOUT and WITH allowance - length 500 mm

Consulting and
direct contact

Would you like some obligation-free advice or do you need a customized quote?

Our team is ready to help—fast, competent, and solution-oriented.

1.7227 QT & 1.7225 QT €co-Präz® flat steel without or with machining allowance - €co-Präz®