EN19 Alloy Steel Rounds (708M40)
BS 708M40 / 709M40 · AISI 4140 · DIN 42CrMo4 (1.7225) · JIS SCM440 · IS 40Cr1Mo28
EN19 Alloy Steel Rounds (708M40) 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 | Mo |
|---|---|---|---|---|---|
| Min | 0.36 | 0.10 | 0.70 | 0.90 | 0.25 |
| Max | 0.44 | 0.40 | 1.00 | 1.20 | 0.35 |
Typical standard ranges. Every mill lot ships with its own test certificate on request.
III. Mechanical properties
- Tensile
- 850–1000 MPa
- Yield
- 680 MPa min
- Hardness
- 248–302 HB
- Elongation
- 13% min
IV. Supply condition
- Condition
- Hardened & tempered (T)
- Machinability
- Fair
- Forms
- round
- Cutting
- Band saw ±1 mm
- SKU
- SST-AES-04
V. Weigh it, then request it.
Locked to EN19EN19 · 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%.
Crankshafts, high-tensile bolts, gears
About EN19
Can you cut EN19 to my sizes?
Yes. EN19 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 EN19?
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 EN19?
BS 708M40 / 709M40, AISI 4140, DIN 42CrMo4 (1.7225), JIS SCM440, IS 40Cr1Mo28. Equivalents are close matches; confirm against your drawing's specification.
