AISI O2 DIN 1.2842 Cold Work Tool Steel Round Bar
- Price
- US $1500
- Model
- O2 1.2842
- MOQ
- 1 metric ton
Item specifics
- Round bar
- 8mm-350mm
- Flat bar
- thickness 2mm –300mm x width 200mm – 800mm
- Surface Finish
- Black, Rough Machined, Turned or as per given requirements.
Review
Description
Applications for ASTM A681 O2 Tool Steel
Steel O2 is used as tool steel for universal use, highly stressed plastic moulds, mould inserts for high hardness and abrasive stress, blanking and stamping tools for all types cutting sheet metals up to 6 mm thickness, cold forming dies, cutting and punching tools of all types, shear blades for paper, plastic and metalworking industries, reamers, thread chasers and cutting tools, pressure pads, guide pins, taps, measuring tools, precision calipers and plug gauges, woodworking tools, plastic and rubber compression moulds, deep drawing tools, clipping.
Contact us for any request of O2 tool steel materials. We will be a better choice.
1. Relevant Steel Specification of AISI O2 Tool Steel
USA | German | British | China |
ASTM A681 | DIN EN ISO 4957 | BS 4659 | GB/T 1299 |
O2 / T31502 | 1.2842 / 90MnCrV8 | B02 | 9Mn2V |
2. AISI O2 Tool Steel Chemical Composition & Other Equivalents
ASTM A681 | C | Mn | P | S | Si | Cr | V | Mo | ||||||
O2 / T31502 | 0.85 | 0.95 | 1.40 | 1.80 | 0.03 | 0.03 | . . . | 0.50 | . . . | 0.50 | . . . | 0.30 | . . . | 0.30 |
DIN ISO 4957 | C | Mn | P | S | Si | Cr | V | Mo | ||||||
1.2842 / 90MnCrV8 | 0.85 | 0.95 | 1.80 | 2.20 | 0.03 | 0.03 | 0.10 | 0.40 | 0.20 | 0.50 | 0.05 | 0.20 | . . . | . . . |
BS 4659 | C | Mn | P | S | Si | Cr | V | Mo | ||||||
B02 | 0.85 | 0.95 | 1.50 | 1.80 | 0.035 | 0.035 | . . . | 0.40 | . . . | . . . | . . . | 0.25 | . . . | . . . |
GB/T 1299 | C | Mn | P | S | Si | Cr | V | Mo | ||||||
9Mn2V | 0.85 | 0.95 | 1.70 | 2.00 | 0.03 | 0.03 | . . . | 0.40 | . . . | . . . | 0.10 | 0.25 | . . . | . . . |
3. ASTM O2 Tool Steel Material Mechanical Properties
Forging of ASTM O2 Tool Steel
Heat O2 steel to 1000°C. Forge it within a range of 850-1050°C reheating if necessary. Cool slowly to avoid setting up stresses
5. AISI O2 Tool Steel Heat Treatment
Annealing : 680 – 720 °C
Hardness after annealing : Max. 220 HB
Stress relieving : Approx. 650 °C
Hot forming : 1050 – 850 °C
Hardening : 790 – 820 °C
Quenching media : Oil, Salt bath ( 220 – 250 °C ) up to 20 mm thickness
Hardness after quenching : 63 – 65 HRC
Hardness after tempering :
100℃ | 200℃ | 300℃ | 400℃ |
64HRC | 62HRC | 57HRC | 50HRC |
