Stelmax 70

Stelmax 70

Stelmax 70 properties and heat treatment forged piece, Including Stelmax 70 application and specifications, Including Stelmax 70 steel plate, Stelmax 70 sheet, Stelmax 70 square steel, Stelmax 70 flat bar,Stelmax 70 Valve,Stelmax 70 forgings.

Stelmax 70 has the following specifications:

Chemical composition % of the ladle analysis of grade Stelmax 70 and Standards

C(％):    0.15
Si(％):    0.30
Mn(％):    1.50
Cr(％):    －
Ni(％):    －
Cu(％):    －
Nb(％):    ≥0.005
V(％):    ≥0.01

Machining performance

Stelmax 70 the mechanical properties of the report, the report provides detailed performance analysis and application.

Principal Design Features

One of the most widely used precipitation hardening grades in the business. While soft and ductile in the solution annealed condition, it is capable of high properties with a single precipitation or aging treatment. Characterized by good corrosion resistance, high harness, toughness and strength.

Machinability

Long, gummy chips characterize this alloys machinability. It can be machined in the annealed condition, however condition H1150M will yield best results. Post machining solution treatment of parts will be required prior to final hardening if machining in this condition.

Heat Treatment

CONDITION A--Soak at 1900 F (1038 C) for 30 minutes and cool below 60 F (16 C) for complete martensite transformation. CONDITION H 950- Treat Condition A material at 900 F(482 C) for 1 hour, air cool.. CONDITION H925, H1025, H1075, H1100, H1150- Soak solution treated material for 4 hours at specified temperature, air cool, CONDITION H1150M- Soak solution treated material at 1400 F (760 C) for 2 hours, air cool, then re-heat to 1150 F (620 C) for 4 hours and air cool.

Welding

Successfully welded by common fusion and resistance methods, this alloy should not be joined by oxyacetylene welding. AWS E/ER630 filler metal is recommended if required.

Forging

Soak for 1 hour at 2150 F (1177 C) prior to forging. Do not work below 1850 F (1010 C). Post-work solution treatment is required prior to final hardening.