Steel grade for fasteners applications

They are steels used for cold and hot deformation to produce screws, bolts, nuts or parts intended for subsequent mechanical machining. 
The strict control of the manufacturing process allows us to obtain products that are free of non-metallic inclusions, whereas the controlled rolling guarantees a product with contained decarburisation and no surface defects. 
The slow final cooling of the wire guarantees a product that perfectly fulfils the strict specifications of cold deformation. The key manufacturers of nuts and bolts in Europe and abroad appreciate the quality of ORI Martin special steels, and particularly acknowledge the excellent ductility and hardenability. 

Fasteners

Steel grade

Steel grade Corresponding standard Average chemical composition
Werkstoff ORI Martin C Mn Si Cr Ni Mo B ppm V
C C4C 1.0303 SC08X1 0,04 0,30 0,03 - - - - -
C8C 1.0213 SC08X5 0,08 0,30 0,03 - - - - -
C10C 1.0214 SC10X1 0,10 0,40 0,05 - - - - -
C15C 1.0234 SC15S5 0,15 0,50 0,10 - - - - -
C20C 1.0411 SC20S2 0,20 0,60 0,10 - - - - -
B 15B2 1.5501 S15B11 0,13 0,55 - - - - 30 -
17B2 1.5502 S18B12 0,17 0,70 - - - - 20 -
23B2 1.5508 S21B11 0,21 0,80 - 0,15 - - 20 -
28B2 1.5510 S25B12 0,27 0,80 - 0,25 - - 20 -
33B2 1.5514 S34B11 0,32 0,80 - 0,15 - - 20 -
35B2 1.5511 S35B11 0,37 0,75 - - - - 30 -
45B2 1.5513 S45B11 0,45 0,75 - 0.15 - - 30 -
Mn B 23MnB4 1.5535 S21B13 0,22 0,95 - 0,30 - - 20 -
30MnB4 1.5526 S30B11 0,30 0,80 - 0,15 - - 20 -
36MnB4 1.5537 S35B16 0,35 0,90 - 0,15 - - 20 -
Mo B 30MoB1 1.5408 S30B15 0,30 0,90 - 0,20 - 0,10 20 -
Cr Ni Mo 39NiCrMo3 1.6510 S38H41 0,38 0,70 - 0,80 0,80 0,20 - -
34NiCrMo6 1.6582 S34H61 0,34 0,70 - 1,50 1,50 0,20 - -
Cr B 25CrB3 S25BC1 0,25 0,65 - 0,70 - - 40 -
32CrB4 1.7076 S30BC 0,32 0,80 - 1,10 - - 20 -
36CrB4 1.7077 S36BC 0,36 0,80 - 1,10 - - 20 -
Cr 34Cr4 1.7033 S34C41 0,34 0,70 - 1,00 - - - -
37Cr4 1.7034 S37C44 0,37 0,70 - 1,00 - - - -
41Cr4 1.7035 S41C4 0,41 0,70 - 1,00 - - - -
Mn Cr B 27MnCrB5-2 1.7182 S27B51 0,27 1,25 - 0,45 - - 20 -
33MnCrB5-2 1.7185 S31B51 0,33 1,35 - 0,45 - - 20 -
Cr Mo 34CrMo4 1.7220 S34L41 0,34 0,70 - 1,00 - 0,20 - -
42CrMo4 1.7225 S42L41 0,42 0,70 - 1,00 - 0,20 - -
Cr Mo B 31CrMoB2-1 1.7272 S30B18 0,30 1,00 - 0,50 - 0,12 20 -
32CrMoB4 S32BL1 0,32 0,80 - 1,00 - 0,12 20 -
Cr Mo V 21CrMoV5-7 1.7709 S21K51 0,21 0,60 - 1,35 - 0,68 - 0,28
40CrMoV4-6 1.7711 B40K41 0,40 0,60 - 1,00 - 0,60 - 0,30
Download

Products



ORI Martin S.p.A.
Wire rod

Rolling takes place at a controlled temperature using the very latest technology. This allows a smaller grain size to be obtained together with a more fine and even structure. Optimal characteristics for subsequent use in drawing and cold moulding in addition to a higher degree of globularisation after the annealing process.

Hot rolled round bars

Production takes place in a rolling mill at a controlled temperature using the very latest technology which guarantees a fine grain and homogeneous structure; the calibrator finishing block allows bars with restricted dimensional tolerances.

Continuous casting billets

ORI Martin spa sells continuous casting steel billets to rolling mills and hot forgers. The refining process with the degassing station and the casting through submerged nozzles guarantee the supply of billets of high-quality engineering steel.

Sales

Alberto Franchi

Export Sales Manager

Italy

Phone +39 030 3999 205

Alessandro Lombardi

Sales Manager Italy

Italy

Phone +39 030 3999 214

Alberto Petroboni

Sales Manager Italy

Italy

Phone +39 030 3999 272

Julia Seeber

Export Sales

Italy

Phone +39 030 3999 224


ORI Martin France Sarl

Sales

Michel Pham

France

Phone +33 3 873 610 90


ORI Martin Deutschland GmbH

Sales

Mario Gerth

Sales manager

Germany

Phone +49 203 318 77 16


Trafilati Martin S.p.A.
Cold drawn bars

Cold drawn bars are cold finished products achieved by the cold deformation of the wire rod through a die that reduces the diameter and after various controls are cut into the length required. This process achieves the calibration of the wire into the diameter required. We can obtain wire in a wide range of diameters, the mechanical characteristics increase depending on the reduction carried out.

Cold drawn bars can be produced with the following additional operations and controls:
- Heat treatment by annealing (soft and spheroidized annealing and so on)
- Heat treatment by quenching and tempering, normalising or stress reliving by induction (after drawing)
- Ends chamfering
- Surface defect control by Eddy Current
- Anti-mixing control

Peeled bars

Peeled bars from 17 to 80 mm.

Peeled bars from hot rolled bars can be produced with the following additional operations and controls:
- Heat treatment by annealing (soft and spheroidized annealing and so on)
- Heat treatment by quenching and tempering, normalising or stress reliving by induction
- Ends chamfering
- Surface defect control by Eddy Current
- Anti-mixing control
- Ultrasonic test


Peeled bars from hot rolled coil can be produced with the following additional operations and controls:
- Heat treatment by annealing (soft and spheroidized annealing and so on)
- Heat treatment by quenching and tempering, normalising or stress reliving by induction (after peeling)
- Ends chamfering
- Surface defect control by Eddy Current
- Anti-mixing control

Sales

Massimo Modonesi

Sales manager Trafilati Martin

Italy

Phone +39 030 7058323


Novacciai Martin S.p.A.
Peeled & reeled bars

Peeled & reeled bars (+SH EN 10277)
Alloy Steel, Non-Alloy Steel and Stainless Steel
Ø 10,00 ÷ 200,00 ( ≥IT9 ) EN 10278

Cold drawn bars

Cold drawn bars (+C EN 10277)
Alloy Steel, Non-Alloy Steel and Stainless Steel
Ø 8,00 ÷ 74,00 ( ≥IT9 ) EN 10278

Sales

Mauro Rosti

Sales Manager

Italy

Phone +39 0321 530625

Simone Locati

Sales

Italy

Phone +39 0321 530605


Trafileria Lariana S.p.A.
Cold drawn wires and bars

Cold Drawn (+U+C)
Cold Drawn from Annealed Spheroidizing wire rod (+U+AC+C)
Redrawn annealed wire (+U+C+AC+LC)
Cold drawn with final Spheroidizing Annealing (+U+C+AC)

Sales

Michele Stefanoni

Italy

Phone +39 031 850438



Reserved area