Elements Required Required

ASTM A 564 Type 630 10088-3 Mat. 1.4542

Carbon 0.07 0.07 0.07

Manganese 1.00 1.50 1.00

Phosphorus 0.04 0.04 0.04

Sulfur 0.03 0.03 0.03

Silicon 1.00 0.70 0.70

Chromium 15.0017.50 15.0017.00 15.0017.00

Nickel 3.00-5.00 3.00-5.00 3.00-5.00

Aluminium ---- ----

Molybdenum ---- 0.60 0.60

Titanium ---- ----

Copper 3.00-5.00 3.00-5.00 3.00-5.00

Columbium +Tantalum 0.15 - 0.45 ----

Niobium 5 x C to 0.45 5 x C to 0.45

Required Required

ASTM A 564 Type 630 10088-3 Mat. 1.4542 (+P930)

Homogenization

Temperature Min Not defined. Not defined. 1040C +/-15C

Holding for a minimum Not defined. Not defined. 1.5 Hrs.

Quenching Media Not defined. Not defined. Air

Solution annealing

Temperature 1040C +/-15C 1030C-1050C 1050C +/-15C

Holding for a minimum Not defined Not defined. 30 Min / Inch

Quenching Media Not defined Oil / Air Water

Precipitation Hardening H1150

Temperature 620 C 620 C 620 C

Holding for a minimum 4 Hrs. 4 Hrs. 4 Hrs.

Quenching Media Air cool Air cool Air cool

Required Required

Heat No. ASTM A 564 Type 630 10088-3 Mat. 1.4542 (+P930)

Impact Testing @room

Temperature.41 40 30

Required Required

ASTM A 564 Type 630 10088-3 Mat. 1.4542 (+P930)

Yield Strength 0.2 %

Offset, min Mpa725 720 725

Tensile Strength,

Mpa930 930-1100 930-1100

Elongation in 2

in. [51 mm],

min, %

16.00 16.00 16.00

Reduction in Area. % 50 Not defined. -----

Rockwell C 28 Not defined. -----

Brinell 277 Not defined. -----

Hardness Min

Proposal

Proposal

Chemical Analysis

Heat Treatment Details

Impact Testing

Mechanical Analysis

ElementsProposal

Proposal