RE: Minimum temperature range for common low carbon steels. The ductile to brittle transition temperature can vary considerably for low carbon steels, and is dependent on grain size, heat treatment and alloy content. The fracture appearance transition temperature for 50% flat fracture (FATT @ 50%) is a good reference point for comparing materials.
In Texas, you need a score of 70 to pass each exam. But, each exam consists of two parts â the ânationalâ insurance section and the âstate rulesâ section. The national and state questions are mixed together in Texas. You will need a combined score of 70 to pass.
1 Four years of experience is required. 2  Please note that the Arizona Business Management exam i s also required to be passed to obtain your contractorâs license. 3  Workers compensation insurance is required if you employ at least 1 person.o apply, contact the Arizona Registrar of Contractors at 1-602-542-1525. Licenses are good for 2 years. Licenses are generally granted within 40-60 days. 1  Commercial Contractor application fee is $890. 2  Residential Contractor application fee is $445. 3  Dual License Contractor application fee is $1,105.