EN9 Carbon Steel
Grade Introduction:
En9 round bar is also known by its trade name 070M55. The carbon content in the alloy of an en9 bright bar ranges between 0.5 – 0.6%, thus making this grade a medium carbon steel alloy. The tensile strength of the en9 steel rod could be developed between 500 Mpa – 800 Mpa.
Grade Application
Typical applications for the en9 flat bar include its use in the production of shafts, woodworking, axes, knives, crankshafts, screws, bushes, sprockets, springs, cams, cylinders, sickles, drills as well as small gears, machine tools, keys and hammers.
Equivalent Grades
BS 970 1991 |
BS 970 1955 EN |
AISI/SAE |
Werksoff |
070M55 |
EN9 |
1055 |
1.0535 |
Our Supply Range
We supply to automotive ancillaries and OEM customers. The products we manufacture are used as input for manufacturing of automotive and general engineering components. These components are further assembled into systems fitted in automobiles and other engineering applications.
| Supply Condition | SECTION | Size (MM) | |
|---|---|---|---|
| Min | Max | ||
| Cold Drawn | Round | Ø8 | Ø70 |
| Hexagon | 8 A/F | 27 A/F | |
| Centerless Peeled | Round | Ø10 | Ø70 |
| Centerless Ground | Round | Ø8 | Ø70 |
Chemical Composition
The following table shows the chemical composition of EN9 steel:
Element |
C |
Si |
Mn |
P |
S |
Cr |
Content(%) |
0.50-0.60 |
0.4 Max |
0.50-0.80 |
0.035 Max |
0.015-0.035 |
0.30 Max |
Mechanical Properties
- UTS in N/mm2 , hot rolled or normalized, min.:705 (72 kg/mm2)
- Elongation %, hot rolled or normalized, min: 13
- UTS in N/mm2 , hardened and tempered, min. *:775 (79 kg/mm2)
- Elongation %, hardened and tempered, min: 13
- *(Limiting ruling section = 30mm)
Hardness
180 HB to 230 HB
Tempering
550°C to 660°C
Normalizing
810 – 840 oC, air cool
Hardening
820-850ºC
Forging Properties
Forging, rolling, etc. : 1150 oC, finishing > 850 oC
Annealing
810 – 840 oC, furnace cool
Supply Cities
Ambattur, Bangalore, Chennai, Coimbatore, Dindigul, Guindy, Madurai, Nellore, Hyderabad, Tirupur, Tuticorin, Madurai, Andhra Pradesh, Karnataka, Puducherry, Kerala, Kanyakumari, Telangana, Salem, Thanjavur, Trichy, Erode, Vellore, Karur, Nagercoil, Kanchipuram, Karaikudi, Pudukottai, Nagapattinam.
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Addition to other grades
EN1A, EN3B, EN8, EN8D, EN9, EN19, EN24, EN31, EN32B, EN36C, EN41B, EN43B, EN47, EN353, IS2062, 42Crmo4, HCHCR, D2, D3, H-11, H-13, CW-1, OHNS, M2, M35, M42, DIN1.2714, P20, P20+S, P20+Ni, SCM420, ASTMSA-36, ASTMSA-105, SAE1018, SAE4140, SAE8620, 16MNCR5, 20MNCR5, C20, C45, C50, C60, CK45, 20C8, 40C8, 45C8, 55C8, C55MN75, SAE52100, S40C, S355J2G3.
