Overview
About OHNS Alloy Steel
C P Steel Suppliers supplies OHNS Alloy Steel for engineering, industrial machinery and manufacturing applications. It is classified as Oil Hardening Non-Shrinking Cold Work Tool Steel. Common equivalents include O1, 100MnCrW4, 90MnWCrV5, 1.2510. Available forms include ROUND BAR, FLAT BAR.
Contact our Mumbai team with your required size and quantity to confirm availability, documentation and delivery.
OHNS Round Bar Suppliers, OHNS Stockist, OHNS Big Dia, OHNS Cut to size as per requirement, OHNS vs O1, 100MnCrW4, 90MnWCrV5, 1.2510, OHNS Flat Bar, OHNS Small Quantity, OHNS Larger Dia, OHNS Circle, Ring. OHNS Mumbai, Chennai, Tamil Nadu, Gujarat, Pune, Maharashtra, India etc.
Specification
Chemical Composition
ElementComposition (wt%)
CCarbon
0.90 - 1.05%
MnManganese
1.00 - 1.40%
SiSilicon
0.15 - 0.35%
CrChromium
0.40 - 0.70%
WTungsten
0.40 - 0.70%
VVanadium
0.05 - 0.20%
PPhosphorus
max 0.030%
SSulfur
max 0.030%
FeIron
Balance
Performance
Mechanical, Physical & Processing Properties
PropertyValue / Reading
Tensile Strengthmax 750 MPa (Annealed)
Yield Strengthmin 380 MPa (Annealed)
Elongation15 - 20 % (Annealed)
Hardness Brinellmax 229 HBW (Annealed) / 58 - 64 HRC (Oil Quenched & Tempered)
PropertyValue / Reading
Density7.85 g/cm³
Melting Point1420 °C
Modulus Of Elasticity210 GPa
Thermal Conductivity32.0 W/m·K
PropertyValue / Reading
WeldabilityPoor; tool steels require high preheating (250 - 300 °C) and post-weld tempering for repair.
MachinabilityExcellent machinability in spheroidized annealed state (approx. 90% of W1 tool steel).
Case HardeningThrough-hardening oil-quenched tool steel with minimal dimensional change for dies, punches, and gauges.
Corrosion ResistanceLow; requires oiling and dry storage.
Cross Reference
Equivalent Grades by Standard
Standard / RegionEquivalent Grade
Indian IST90Mn2W50Cr45 (IS 3748)
European EN100MnCrW4 (EN ISO 4957)
Germany DIN100MnCrW4 / 90MnWCrV5 (1.2510)
Japan JISSKS3 (JIS G4404)
UK (BS)BO1 (BS 4659)
USA (SAE / AISI)AISI O1 / ASTM A681 O1
Availability
Available Forms & Sizes
- ROUND BAR
- FLAT BAR
Form TypeSize Range Available
Black Round BarsOD 16MM - OD 200MM
FAQ
OHNS — frequently asked questions
What is the equivalent of OHNS?
Common equivalents include O1, 100MnCrW4, 90MnWCrV5, 1.2510. Standards: Indian IS: T90Mn2W50Cr45 (IS 3748); European EN: 100MnCrW4 (EN ISO 4957); Germany DIN: 100MnCrW4 / 90MnWCrV5 (1.2510); Japan JIS: SKS3 (JIS G4404); UK (BS): BO1 (BS 4659); USA (SAE / AISI): AISI O1 / ASTM A681 O1.
Which forms of OHNS are available?
OHNS is available as ROUND BAR, FLAT BAR.
Where can I buy OHNS Alloy Steel in Mumbai or across India?
C P Steel Suppliers supplies OHNS Alloy Steel from Mumbai. Contact us with your size and quantity to confirm availability and delivery.
Interested in Alloy Steel OHNS?
Tell us the size and quantity you need and we will get back to you.