
YSt 310 MS Square & Rectangular Hollow Sections
IS 4923 YSt 310 · EN 10219 S355 · ASTM A500 Gr B
MS Square & Rectangular Hollow Sections in ready stock at our Madurai godowns, cold formed, welded, 20×20 to 300×300 mm · 1.6–10 mm wall. Band-saw cut to your sizes with mill test certificates on request.
I. Sizes & weights
Nominal weights at 7.85 g/cm³ · 20×20 to 300×300 mm · 1.6–10 mm wall| A × B × WT mm | kg / metre | kg / 6 m | |
|---|---|---|---|
| 40 × 40 × 2.6 | 3.05 | 18.3 | |
| 50 × 25 × 2.9 | 3.15 | 18.9 | |
| 60 × 60 × 3.2 | 5.71 | 34.2 | |
| 80 × 40 × 3.2 | 5.71 | 34.2 | |
| 100 × 50 × 4 | 8.92 | 53.5 | |
| 100 × 100 × 4 | 12.1 | 72.3 | |
| 150 × 100 × 5 | 18.8 | 113.0 | |
| 200 × 200 × 6 | 36.5 | 219.3 |
II. Chemical composition (% by weight)
| Element | C | Mn | S | P |
|---|---|---|---|---|
| Min | – | – | – | – |
| Max | 0.25 | 1.50 | 0.045 | 0.045 |
Typical standard ranges. Every mill lot ships with its own test certificate on request.
III. Mechanical properties
- Tensile
- 450 MPa min
- Yield
- 310 MPa min
- Elongation
- 15% min
IV. Supply condition
- Condition
- Cold formed, welded
- Machinability
- Good
- Forms
- rect
- Cutting
- Band saw ±1 mm
- SKU
- SST-MSS-14
V. Weigh it, then request it.
Locked to YSt 310YSt 310 · 7.85 g/cm³
W = (2(A + B) − 4·WT) × WT × L × ρ ÷ 1,000,000 (with inside sizes, WT = (A − a) ÷ 2 = (B − b) ÷ 2) · ρ = 7.85 g/cm³ · rounded to 0.1 kg. Theoretical weight; actual mill weight can vary by ±2–3%.
Structures, gates, furniture, roofing
About YSt 310
Can you cut YSt 310 to my sizes?
Yes. YSt 310 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 YSt 310?
An MTC is supplied with mill material on request, traceable to the heat number.
What sizes are in stock?
20×20 to 300×300 mm · 1.6–10 mm wall. For large tonnage, message us to reserve material.
What are the equivalents of YSt 310?
IS 4923 YSt 310, EN 10219 S355, ASTM A500 Gr B. Equivalents are close matches; confirm against your drawing's specification.



