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.
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 | |
Products
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.
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 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.
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.
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: ORI Martin S.p.A.
Sales: ORI Martin France Sarl
Sales: ORI Martin Deutschland GmbH
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
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
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: Trafilati Martin S.p.A.
Massimo Modonesi
Sales manager Trafilati Martin
Italy
Phone +39 030 7058323
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
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
Cold drawn bars (+C EN 10277)
Alloy Steel, Non-Alloy Steel and Stainless Steel
Ø 8,00 ÷ 74,00 ( ≥IT9 ) EN 10278
Sales: Novacciai Martin 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)
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)