Skip to Content


Primary Grades

High-performance flat-rolled products engineered for durability and resilience.

SUP9 / SUP11A

Used in Leaf Springs

  • Size:  38.1x4.76 to 100x40
  • Edge Radius: T/2, R=T , R5
  • Length: Based on Requirement
  • Quality: Surface is Free from Crack, Lap, Seams, Pits, Folds, Roll Marks
  • Decarb: 0.15mm max
  • Hardness: 256BHN to 305 BHN
  • Straightness: Hot Rolled 3mm/mtr max
  • Inclusions: Thick 1.5 ABCD max

Thin 2.5 ABCD max

Custom Requirements As per TDS
EN45A

Used in Lower Links

  • Size: 80x20, 90.3x22, 76x16, 76x18, 65x16
  • Edge Radius: T/2, Square Edge
  • Length: Based on Requirement
  • Quality: Surface is Free from Crack, Lap, Seams, Pits, Folds, Roll Marks
  • Decarb: 0.15mm max
  • Hardness: 256BHN to 305 BHN
  • Straightness: Hot Rolled 3mm/mtr max
  • Inclusions: Thick 1.5 ABCD max

Thin 2.5 ABCD max

Custom Requirements As per TDS
BORON STEEL

Used in Rotavator Blades

  • Size: 80x8, 80x7, 75x7, 70x8, 70x7, 65x8, 60x7, 60x6, 40x7
  • Edge Radius: T/2, Square Edge
  • Length: Based on Requirement
  • Quality: Surface is Free from Crack, Lap, Seams, Pits, Folds, Roll Marks
  • Decarb: 0.15mm max
  • Hardness: 20HRC Max
  • Straightness: Hot Rolled 3mm/mtr max
  • Inclusions: Thick 1.5 ABCD max

Thin 2.5 ABCD max​



Titanium Addition for better Refining
Width Range (mm) Tolerance (mm) (+/-) Tolerance (mm)
Width (W) Thickness (T) Concavity (+max) for
≤ 10 > 10 T ≤ 10 T > 10
40-50 0.30 0.15 - 0.15 0.15
51-75 0.50 0.15 0.20 0.15 0.20
76-100 0.70 0.20 0.25 0.20 0.20
101-125 0.90 0.25 0.40 0.30 0.40
Standard / Grade CHEMISTRY (%)
C Mn P S Si Cu Cr Ni Mo V Al B Ti
DIN
50CrV40.47-0.550.70-1.100.035 Max0.035 Max0.15-0.400.25 Max0.90-1.20--0.10-0.200.040 Max--
51CrMoV40.48-0.560.70-1.100.030 Max0.030 Max0.15-0.400.25 Max0.90-1.20-0.15-0.250.07-0.120.040 Max--
51CrV40.48-0.550.85-1.100.020 Max0.020 Max0.25-0.400.25 Max0.95-1.200.20 Max0.06 Max0.10-0.200.015-0.040--
BS
EN45A0.55-0.650.70-1.000.050 Max0.050 Max1.70-2.00-0.25 Max------
ASTM
SAE51600.56-0.640.75-1.000.035 Max0.040 Max0.15-0.30-0.70-0.90---0.040 Max--
JIS
SUP90.52-0.600.65-0.950.035 Max0.035 Max0.15-0.350.15 Max0.65-0.95------
SUP9A0.56-0.640.65-0.950.035 Max0.035 Max0.15-0.350.25 Max0.70-1.00---0.040 Max--
SUP11A0.56-0.640.70-1.000.035 Max0.035 Max0.15-0.35-0.70-1.00----0.0005 Min-
Boron Steel
30MnCrB50.27-0.321.15-1.400.035 Max0.035 Max0.15-0.35-0.30-0.40---0.02-0.060.0025-0.0050.03-0.05