EN24 Chrome Moly Steel Bars (817M40)
BS 817M40 · AISI 4340 · DIN 34CrNiMo6 (1.6582) · JIS SNCM439 · IS 40Ni2Cr1Mo28
EN24 Chrome Moly Steel Bars (817M40) in ready stock at our Madurai godowns, hardened & tempered (t), Ø 16–350 mm. Band-saw cut to your sizes with mill test certificates on request.
I. Sizes & weights
Nominal weights at 7.85 g/cm³ · Ø 16–350 mm| Ø mm | kg / metre | kg / 6 m bar | |
|---|---|---|---|
| 16 | 1.58 | 9.47 | |
| 20 | 2.47 | 14.8 | |
| 25 | 3.85 | 23.1 | |
| 32 | 6.31 | 37.9 | |
| 40 | 9.86 | 59.2 | |
| 50 | 15.4 | 92.5 | |
| 63 | 24.5 | 146.8 | |
| 80 | 39.5 | 236.8 | |
| 100 | 61.7 | 369.9 | |
| 125 | 96.3 | 578.0 | |
| 160 | 157.8 | 947.0 | |
| 200 | 246.6 | 1,479.7 | |
| 250 | 385.3 | 2,312.0 | |
| 300 | 554.9 | 3,329.3 | |
| 350 | 755.3 | 4,531.6 |
II. Chemical composition (% by weight)
| Element | C | Si | Mn | Cr | Ni | Mo |
|---|---|---|---|---|---|---|
| Min | 0.36 | 0.10 | 0.45 | 1.00 | 1.30 | 0.20 |
| Max | 0.44 | 0.40 | 0.70 | 1.40 | 1.70 | 0.35 |
Typical standard ranges. Every mill lot ships with its own test certificate on request.
III. Mechanical properties
- Tensile
- 850–1000 MPa
- Yield
- 650 MPa min
- Hardness
- 248–302 HB
- Elongation
- 13% min
IV. Supply condition
- Condition
- Hardened & tempered (T)
- Machinability
- Fair
- Forms
- round, flat
- Cutting
- Band saw ±1 mm
- SKU
- SST-AES-05
V. Weigh it, then request it.
Locked to EN24EN24 · 7.85 g/cm³
W = π × D² × L × ρ ÷ 4,000,000 · ρ = 7.85 g/cm³ · rounded to 0.1 kg. Theoretical weight; actual mill weight can vary by ±2–3%.
Heavy-duty shafts, gears, axles, connecting rods
About EN24
Can you cut EN24 to my sizes?
Yes. EN24 is band-saw cut to ±1 mm. Send piece sizes and quantities with your request; cutting is quoted with the material.
Is a mill test certificate provided with EN24?
An MTC is supplied with mill material on request, traceable to the heat number.
What sizes are in stock?
Ø 16–350 mm. For large tonnage, message us to reserve material.
What are the equivalents of EN24?
BS 817M40, AISI 4340, DIN 34CrNiMo6 (1.6582), JIS SNCM439, IS 40Ni2Cr1Mo28. Equivalents are close matches; confirm against your drawing's specification.
